Which public WAN technology provides security by using encrypted tunnels over Internet connections?

Data Communications and Networking 4(PreQ1, Q2)(PreMP1, MP2)(PreXam)(MidQ1, Q2)(MXam, MLab)(MLabQ1, Q2)(FinQ1, Q2)(FinLQ1, Q2)

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Data Communications and Networking 4(PreQ1, Q2)(PreMP1, MP2)(PreXam)(MidQ1, Q2)(MXam, MLab)(MLabQ1, Q2)(FinQ1, Q2)(FinLQ1, Q2)
Which technology could be used to as a secure WAN connection?
Which WAN technology provides a secure connection to a private network over public lines?
Which technology is used in WAN technologies?
Which of the following is an example of a public WAN?

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The Answer is considered to be the brains of the ACI architecture.

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What is a characteristic of the two-tier spine-leaf topology of the Cisco ACI fabric architecture?

Select one:

The leaf switches always attach to the spines and they are interlinked through a trunk line.

The spine and leaf switches are always linked through core switches.

The leaf switches always attach to the spines, but they never attach to each other.

The spine switches attach to the leaf switches and attach to each other for redundancy.

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Answer This is typically regarded as the brains of a device.

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Answer A purpose-built hardware solution for integrating cloud computing and data center management.

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An Answer is a collection of end-point groups (EPG), their connections, and the policies that define those connections.

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Which network traffic management technology is a basic element in SDN implementations?

Select one:

OpenFlow

OpenStack

Interface to the Routing System

IEEE 802.1aq

Question text

What is an example of an M2M connection?

Select one:

a domestic refrigerator sending an email to homeowners to inform them that milk must be purchased

a person getting information from a database, or conducting a complex analysis

two people communicating with each other through an instant messaging application

a sensor in a garbage can signaling that it is full and delivering the data to a GPS mapping system for the sanitation truck to adjust its route for pickups

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Answer This type of SDN uses a centralized controller that has knowledge of all devices in the network.

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How many "things" are predicted to be interconnected on the Internet by 2020?

Select one:

5 million

1 billion

1 million

50 billion

Question text

Cloud computing and virtualization are different terms that refer to the same thing.

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Today, over __% of things in the physical world are still not connected to the Internet. Select the answer that will complete the statement.

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SDN is a network architecture that has been developed to virtualize the network.

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What is a characteristic of data flow processing in SDN?

Select one:

The SDN controller routes a data flow first and the data plane will use policies to permit or deny the flow.

OpenStack is used to construct the entry in switches to facilitate data forwarding.

Each data flow through the network must be approved by the SDN controller first.

The SDN controller attaches an entry to each packet to identify the flow.

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Which Cloud computing service would be best for an organization that needs to collaboratively create applications and deliver them over the web?

Select one:

ITaaS

PaaS

SaaS

IaaS

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Which term describes the data exchanges between virtual servers in a data center?

Select one:

backbone traffic

vertical traffic

east-west traffic

north-south traffic

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Answer These switches provide an application-aware switching fabric and work with an APIC to manage the virtual and physical network infrastructure.

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The IoT refers to the network of billons of physical objects accessible through the Internet as we continue to connect the unconnected.

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Answer Also called the forwarding plane, this plane is typically the switch fabric connecting the various network ports on a device.

Question text

What is Fog computing?

Select one:

It is a type of computing where services are hosted where they are used, such as at the network edge or with end devices.

It is a type of computing that enhances P2P applications.

It is a type of computing that disperses servers and services globally in distributed data centers.

It is a type of computing that sends controller data to a sensor.

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The LLQ feature brings strict priority queuing (PQ) to CBWFQ.

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Packets are assigned to user-defined classes based on matches to criteria such as protocols, ACLs, and input interfaces.

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IntServ provides a way to deliver the end-to-end QoS that real-time applications require by explicitly managing network resources to provide QoS to specific user packet streams, sometimes called microflows.

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Packets are classified into different flows based on header information including the ToS value.

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CBWFQ extends the standard WFQ functionality to provide support for user-defined traffic classes.

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Network traffic can be marked at both Layer 2 and Layer 3 for QoS..

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Under which condition does congestion occur on a converged network with voice, video, and data traffic?

Select one:

if the request for bandwidth exceeds the amount of bandwidth available

if a user downloads a file that exceeds the file limitation that is set on the server

if video traffic requests more bandwidth than voice traffic requests

if voice traffic latency begins to decrease across the network

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What happens when the memory queue of a device fills up and new network traffic is received?

Select one:

The network device sends the received traffic immediately.

The network device queues the received traffic while sending previously received traffic.

The network device drops all traffic in the queue.

he network device will drop the arriving packets.

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What does the FIFO queuing stands for? Answer

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The LLQ feature brings strict priority queuing (PQ) to CBWFQ.

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CBWFQ extends the standard WFQ functionality to provide support for user-defined traffic classes.

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The Answer QoS model specifies a simple and scalable mechanism for classifying and managing network traffic and providing QoS guarantees on modern IP networks.

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Which statement describes the QoS classification and marking tools?

Select one:

Classification is performed after traffic is marked.

Classification should be done as close to the destination device as possible.

Marking is the identification of which QoS policy should be applied to specific packets.

Marking is the adding of a value to a packet header.

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Delay-sensitive data such as voice is added to a priority queue so that it can be sent first (before packets in other queues).

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Which model is the only QoS model with no mechanism to classify packets?

Select one:

hard QoS

IntServ

DiffServ

best-effort

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Which queuing method provides user-defined traffic classes where each traffic class has a FIFO queue?

Select one:

FIFO

WFQ

CBWFQ

FCFS

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What is the default queuing method used on the LAN interfaces of Cisco devices?

Select one:

CBWFQ

FIFO

LLQ

WFQ

Question text

How many levels of priority are possible when using class of service (CoS) marking on frames?

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What does the WFQ automated scheduling method stands for? Answer

Question text

Packets are assigned to user-defined classes based on matches to criteria such as protocols, ACLs, and input interfaces.

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Which type of traffic does Cisco recommend be placed in the strict priority queue (PQ) when low latency queuing (LLQ) is being used?

Select one:

management

data

video

voice

Question text

What happens when an edge router using IntServ QoS determines that the data pathway cannot support the level of QoS requested?

Select one:

Data is forwarded along the pathway using IntServ but not provided preferential treatment.

Data is forwarded along the pathway using a best-effort approach.

Data is not forwarded along the pathway.

Data is forwarded along the pathway using DiffServ.

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Packets are classified into different flows based on header information including the ToS value.

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Packets are forwarded in the order in which they are received.

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MAC address table flooding attacks are addressed with port security.

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VLAN attacks are controlled by disabling DTP and following basic guidelines for configuring trunk ports.

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Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

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Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

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It is a type of telnet attack where the attacker may use a list of common passwords, dictionary words, and variations of words to discover the administrative password

Answer:

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Which mode is used to configure SNMP?

Select one:

privileged mode

interface configuration mode

router configuration mode

global configuration mode

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VLAN attacks are controlled by disabling DTP and following basic guidelines for configuring trunk ports.

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It is a type of telnet attack where the attacker continuously requests Telnet connections in an attempt to render the Telnet service unavailable and preventing an administrator from remotely accessing a switch.

Answer:

Question text

It is a type of telnet attack where the attacker may use a list of common passwords, dictionary words, and variations of words to discover the administrative password

Answer:

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What mitigation plan is best for thwarting a DoS attack that is creating a switch buffer overflow?

Select one:

Disable STP

Enable port security

Disable DTP

Place unused ports in an unused VLAN

Question text

The Cisco Discovery Protocol (CDP) is a proprietary Layer 2 link discovery protocol.

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In the 802.1X standard, the client attempting to access the network is referred to as the supplicant.

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The show monitor command is used to verify the SPAN session.

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Which service is enabled on a Cisco router by default that can reveal significant information about the router and potentially make it more vulnerable to attack?

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DHCP is the protocol that automatically assigns a host a valid IP address out of a DHCP pool.

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SNMP is an application layer protocol that provides a message format for communication between managers and agents

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Answer allows source and destination ports to be in different switches.

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DHCP Answer is a mitigation technique to prevent rogue DHCP servers from providing false IP configuration parameters.

Question text

Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

Question text

MAC address table flooding attacks are addressed with port security.

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What is an SNMP management agent?

Select one:

software that is installed on devices managed by SNMP

a database that a device keeps about network performance

a computer loaded with management software and used by an administrator to monitor a network

a communication protocol that is used by SNMP

Question text

How can SNMP access be restricted to a specific SNMP manager?

Select one:

Specify the IP address of the SNMP manager by using the snmp-server host command.

Use the snmp-server community command to configure the community string with no access level.

Define an ACL and reference it by using the snmp-server community command.

Use the snmp-server traps command to enable traps on an SNMP manager.

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It is a type of DHCP attack where the attacker configures a fake DHCP server on the network to issue IP addresses to clients.

Answer:

Question text

Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

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It is a type of DHCP where the attacker floods the DHCP server with bogus DHCP requests and eventually leases all of the available IP addresses in the DHCP server pool.

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Which protocol is used by PPP to provide authentication and protection from playback attacks?

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AnswerA newer and faster technology considered to be part of 4G technology.

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Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?

Select one:

flow control

authentication

synchronous communication

error control

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AnswerA type of digital modem used with high-speed DSL or cable Internet service.

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AnswerThis is a point established in a building or complex to separate customer equipment from service provider equipment.

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Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits?

Select one:

Frame Relay

ATM

ISDN

Metro Ethernet

Question text

An administrator has configured an access list on R1 to allow SSH administrative access from host 172.16.1.100. Which command correctly applies the ACL?

Select one:

R1(config-if)# ip access-group 1 in

R1(config-if)# ip access-group 1 out

R1(config-line)# access-class 1 out

R1(config-line)# access-class 1 in

Question text

What is a disadvantage of leased lines?

Select one:

low quality

inconsistent availability

high cost

complexity

Question text

Which PPP protocol allows a device to specify an IP address for routing over the PPP link?

Question text

A site-to-site VPN is created when devices on both sides of the VPN connection are aware of the VPN configuration in advance.

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What TCP port is used by BGP to exchange messages between routers?

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Which IPv4 address range covers all IP addresses that match the ACL filter specified by 172.16.2.0 with wildcard mask 0.0.1.255?

Select one:

172.16.2.0 to 172.16.3.255

172.16.2.1 to 172.16.255.255

172.16.2.0 to 172.16.2.255

172.16.2.1 to 172.16.3.254

Question text

With which layers of the OSI model do the PPP control protocols interface?

Select one:

NCP interfaces with Layer 3; LCP interfaces with Layer 1

NCP interfaces with Layer 1; LCP interfaces with Layer 2

NCP interfaces with Layer 2; LCP interfaces with Layer 3

NCP interfaces with Layer 1; LCP interfaces with Layer 3

Question text

Answer It is a WAN protocol that provides Provides router-to-router and host-to-network connections over synchronous and asynchronous circuits.

Question text

Which statement correctly describes a WAN technology?

Select one:

The 53-byte ATM cell operates more efficiently for big frames.

MPLS can be used to deliver any type of packet between sites.

ISDN PRI is intended for the home and small enterprise and provides two 64 kb/s B channels and a 16 kb/s D channel.

VSATs create a public WAN while providing connectivity to remote locations.

Question text

What range of IP addresses is represented by the network and wildcard mask 192.168.70.0 0.0.0.127?

Select one:

192.168.70.0 to 192.168.70.255

192.168.70.0 to 192.168.70.127

192.168.70.0 to 192.168.71.255

192.168.70.0 to 192.168.70.63

Question text

Which public WAN technology provides security by using encrypted tunnels over Internet connections?

Question text

Answer It is the default encapsulation type on point-to-point connections, dedicated links, and circuit-switched connections when the link uses two Cisco devices.

Question text

What equipment at the cable service provider office connects the office to the subscriber locations?

Select one:

DSLAM

CSU/DSU

access server

CMTS

Question text

What is an advantage offered by GRE tunnels?

Select one:

support for connecting individual hosts across the Internet

support for IP multicast tunneling

built in security mechanisms

encryption of encapsulated traffic

Question text

What equipment at the cable service provider office connects the office to the subscriber locations?

Select one:

CMTS

access server

DSLAM

CSU/DSU

Question text

What TCP port is used by BGP to exchange messages between routers?

Question text

External BGP is the routing protocol used between routers in different autonomous systems.

Question text

When a PPPoE configuration is being verified, which command can be used to verify the MTU size and encapsulation type configured on a Cisco router?

Select one:

show ip route

show interface dialer 1

show pppoe session

show ip interface brief

Question text

What range of IP addresses is represented by the network and wildcard mask 192.168.70.0 0.0.0.127?

Select one:

192.168.70.0 to 192.168.70.63

192.168.70.0 to 192.168.71.255

192.168.70.0 to 192.168.70.127

192.168.70.0 to 192.168.70.255

Question text

Internal BGP is the routing protocol used between routers in the same AS.

Question text

Which statement describes a characteristic of standard IPv4 ACLs?

Select one:

They can be created with a number but not with a name.

They can be configured to filter traffic based on both source IP addresses and source ports.

They filter traffic based on source IP addresses only.

They are configured in the interface configuration mode.

Question text

Answer A general term for Internet services from a mobile phone or from any device that uses the same technology.

Question text

An administrator has configured an access list on R1 to allow SSH administrative access from host 172.16.1.100. Which command correctly applies the ACL?

Select one:

R1(config-if)# ip access-group 1 in

R1(config-if)# ip access-group 1 out

R1(config-line)# access-class 1 in

R1(config-line)# access-class 1 out

Question text

Generic Routing Encapsulation (GRE) is one example of a basic, non-secure, site-to-site VPN tunneling protocol.

Question text

Which IPv4 address range covers all IP addresses that match the ACL filter specified by 172.16.2.0 with wildcard mask 0.0.1.255?

Select one:

172.16.2.1 to 172.16.255.255

172.16.2.1 to 172.16.3.254

172.16.2.0 to 172.16.2.255

172.16.2.0 to 172.16.3.255

Question text

What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

Question text

Answer A newer and faster technology considered to be part of 4G technology.

Question text

What is an advantage offered by GRE tunnels?

Select one:

support for IP multicast tunneling

built in security mechanisms

encryption of encapsulated traffic

support for connecting individual hosts across the Internet

Question text

To verify the state of a GRE tunnel, use the show interface tunnel command.

Question text

Which statement describes a difference between the operation of inbound and outbound ACLs?

Select one:

Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed.

Inbound ACLs can be used in both routers and switches but outbound ACLs can be used only on routers.

On a network interface, more than one inbound ACL can be configured but only one outbound ACL can be configured.

In contrast to outbound ALCs, inbound ACLs can be used to filter packets with multiple criteria.

Question text

Satellite Internet services are used in locations where land-based Internet access is not available, or for temporary installations that are mobile.

Question text

Dynamic Multipoint VPN (DMVPN) is a Cisco software solution for building multiple VPNs in an easy, dynamic, and scalable manner.

Question text

A site-to-site VPN is created when devices on both sides of the VPN connection are aware of the VPN configuration in advance.

Question text

The use of BGP is most appropriate when an AS has connections to multiple autonomous systems.

Question text

A network engineer is troubleshooting an unsuccessful PPP multilink connection between two routers. The multilink interface has been created and assigned a number, the interface has been enabled for multilink PPP, and the interface has been assigned a multilink group number that matches the group assigned to the member physical serial interfaces. The physical serial interfaces have also been enabled for PPP multilink. Which additional command should to be issued on the multilink interface?

Select one:

encapsulation ppp

no ip address

ip address 192.168.10.1 255.255.255.252

Question text

What is a disadvantage of leased lines?

Select one:

high cost

complexity

inconsistent availability

low quality

Question text

Which statement correctly describes a WAN technology?

Select one:

VSATs create a public WAN while providing connectivity to remote locations.

MPLS can be used to deliver any type of packet between sites.

ISDN PRI is intended for the home and small enterprise and provides two 64 kb/s B channels and a 16 kb/s D channel.

The 53-byte ATM cell operates more efficiently for big frames.

Question text

Which PPP protocol allows a device to specify an IP address for routing over the PPP link?

Question text

With which layers of the OSI model do the PPP control protocols interface?

Select one:

NCP interfaces with Layer 2; LCP interfaces with Layer 3

NCP interfaces with Layer 1; LCP interfaces with Layer 2

NCP interfaces with Layer 1; LCP interfaces with Layer 3

NCP interfaces with Layer 3; LCP interfaces with Layer 1

Question text

Which additional functionality is available on an interface when the encapsulation is changed from HDLC to PPP?

Select one:

authentication

synchronous communication

error control

flow control

Question text

What is a characteristic of a WAN?

Select one:

WANs always use physical cables to connect LANs.

A WAN operates inside the geographic scope of a LAN.

WAN service providers include carriers such as a telephone network or satellite service.

A WAN is typically owned by an enterprise which wants to interconnect its LANs.

Question text

Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

Select one:

fiber optic

Wi-Fi

satellite

copper

Question text

A construction firm is building a power plant at a remote and isolated mine site and needs to connect the data network of the plant to the corporate network. Which public technology is the most suitable to meet the connection needs?

Select one:

satellite Internet

WiMax

DSL

Municipal Wi-Fi

Question text

What is a disadvantage of leased lines?

Select one:

inconsistent availability

complexity

high cost

Question text

Which public WAN technology provides security by using encrypted tunnels over Internet connections?

Question text

Which public WAN technology provides security by using encrypted tunnels over Internet connections?

Question text

Which one of the WAN technologies is inadequate for video traffic but operates adequately for voice traffic?

Select one:

Ethernet WAN

ISDN BRI

dialup

ATM

Question text

Select one:

Municipal Wi-Fi

DSL

WiMax

satellite Internet

Question text

PPP authentication is performed at which OSI layer?

Select one:

Layer 4

Layer 1

Layer 2

Layer 3

Question text

What function does NCP perform in the establishment of a PPP session?

Select one:

It tests the link to determine whether the link quality is sufficient to bring up network layer protocols.

It opens the connections and negotiates configuration options.

It provides automatic configuration of the interfaces at each end including detecting common configuration errors.

It completes the specific configuration of the network layer protocol that is being used.

Question text

Which protocol is used by PPP to provide authentication and protection from playback attacks?

Question text

Which PPP option enables load balancing on PPP-enabled interfaces that connect to a single destination?

Select one:

Authentication

PPP Callback

Multilink

Question text

Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

Select one:

copper

satellite

Wi-Fi

fiber optic

Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits?

Select one:

Metro Ethernet

ISDN

ATM

Frame Relay

Question text

What is an advantage offered by GRE tunnels?

Select one:

built in security mechanisms

encryption of encapsulated traffic

support for connecting individual hosts across the Internet

support for IP multicast tunneling

Question text

Select one:

Municipal Wi-Fi

DSL

WiMax

satellite Internet

Question text

The use of BGP is most appropriate when an AS has connections to multiple autonomous systems.

Select one:

no ip address

ip address 192.168.10.1 255.255.255.252

encapsulation ppp

Question text

To verify the state of a GRE tunnel, use the show interface tunnel command.

Question text

When a PPPoE configuration is being verified, which command can be used to verify the MTU size and encapsulation type configured on a Cisco router?

Select one:

show ip route

show interface dialer 1

show pppoe session

show ip interface brief

Generic Routing Encapsulation (GRE) is one example of a basic, non-secure, site-to-site VPN tunneling protocol.

Question text

Which statement describes a characteristic of standard IPv4 ACLs?

Select one:

They can be configured to filter traffic based on both source IP addresses and source ports.

They can be created with a number but not with a name.

They filter traffic based on source IP addresses only.

They are configured in the interface configuration mode.

Answer A general term for Internet services from a mobile phone or from any device that uses the same technology.

Question text

Answer It is a networking device that provides internetworking and WAN access interface ports that are used to connect to the service provider network.

Which statement describes a difference between the operation of inbound and outbound ACLs?

Select one:

On a network interface, more than one inbound ACL can be configured but only one outbound ACL can be configured.

Inbound ACLs can be used in both routers and switches but outbound ACLs can be used only on routers.

In contrast to outbound ALCs, inbound ACLs can be used to filter packets with multiple criteria.

Inbound ACLs are processed before the packets are routed while outbound ACLs are processed after the routing is completed.

External BGP is the routing protocol used between routers in different autonomous systems.

Select one:

satellite Internet

Municipal Wi-Fi

DSL

WiMax

What is a disadvantage of leased lines?

Select one:

high cost

inconsistent availability

complexity

Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

Select one:

satellite

copper

fiber optic

Wi-Fi

Question text

AnswerA general term for Internet services from a mobile phone or from any device that uses the same technology.

Question text

What function does NCP perform in the establishment of a PPP session?

Select one:

It completes the specific configuration of the network layer protocol that is being used.

It tests the link to determine whether the link quality is sufficient to bring up network layer protocols.

It opens the connections and negotiates configuration options.

It provides automatic configuration of the interfaces at each end including detecting common configuration errors.

Question text

When a PPPoE configuration is being verified, which command can be used to verify the MTU size and encapsulation type configured on a Cisco router?

Select one:

show pppoe session

show ip route

show ip interface brief

show interface dialer 1

Question text

Which public WAN technology provides security by using encrypted tunnels over Internet connections?

Satellite Internet services are used in locations where land-based Internet access is not available, or for temporary installations that are mobile.

Question text

Answer a type of network that establishes a dedicated circuit (or channel) between nodes and terminals before the users may communicate.

Question text

PPP authentication is performed at which OSI layer?

Select one:

Layer 3

Layer 1

Layer 2

Layer 4

Question text

Which medium do service providers use to transmit data over WAN connections with SONET, SDH, and DWDM?

Select one:

copper

satellite

fiber optic

Wi-Fi

What is a characteristic of a WAN?

Select one:

A WAN is typically owned by an enterprise which wants to interconnect its LANs.

A WAN operates inside the geographic scope of a LAN.

WAN service providers include carriers such as a telephone network or satellite service.

WANs always use physical cables to connect LANs.

Question text

Dynamic Multipoint VPN (DMVPN) is a Cisco software solution for building multiple VPNs in an easy, dynamic, and scalable manner.

Question text

Internal BGP is the routing protocol used between routers in the same AS.

Question text

Answer A newer and faster technology considered to be part of 4G technology.

Question text

Which one of the WAN technologies is inadequate for video traffic but operates adequately for voice traffic?

Select one:

ISDN BRI

Ethernet WAN

dialup

ATM

Question text

What is the protocol that provides ISPs the ability to send PPP frames over DSL networks?

Question text

Which PPP option enables load balancing on PPP-enabled interfaces that connect to a single destination?

Select one:

PPP Callback

Multilink

Authentication

Question text

The show ip interface brief and show ipv6 interface brief commands are used to display the up or down status and IP address of all interfaces on a device.

Question text

Use the show ip sla configuration operation-number command to display configuration values including all defaults for IP SLA operations or for a specific operation.

Question text

When is the most appropriate time to measure network operations to establish a network performance baseline?

Select one:

at random times during a 10 week period, so that abnormal traffic levels can be detected

during quiet vacation periods, so that the level of non-data traffic can be determined

whenever high network use is detected, so that how the network performs under stress can be monitored

at the same time each day across a set period of average working days, so that typical traffic patterns can be established

9. A network engineer is investigating an access issue to a web server. The web server can access the Internet and the local clients can open the web pages. However, outside clients cannot access the web pages. What is the most likely cause of the problem?

Question text

The show ip route and show ipv6 route commands are used to display the routing table in a router to learn the directly connected neighbors, more remote devices (through learned routes), and the routing protocols that have been configured.

Question text

The OSI reference model describes how information from a software application in one computer moves through a network medium to a software application in another computer.

Question text

A network engineer is investigating an access issue to a web server. The web server can access the Internet and the local clients can open the web pages. However, outside clients cannot access the web pages. What is the most likely cause of the problem?

Select one:

The web server does not have a default gateway configured.

An ACL is blocking incoming connections.

There are excessive broadcasts in the network.

There is a cable fault.

Question text

Which command runs several other show commands in order to generate many pages of detailed troubleshooting information?

Select one:

show protocols

show ip cache

show running-config

show tech-support

Question text

Which troubleshooting tool can be used to pinpoint the distance to a break in a network cable?

Select one:

digital multimeter

network analysis module

cable tester

network analyzer

Question text

Answer diagrams keep track of the location, function, and status of devices on the network.

Question text

A client calls the support desk and says this to a technician: "I have just started my computer and attempted to check e-mail. The error 0x800ccc0d was displayed. However, I was able to connect to network drives and access the Internet." Which statement would describe the status of this issue?

Select one:

The helpdesk has enough information to begin finding a resolution.

The client needs to reboot the PC and report back to the helpdesk.

The client needs to plug into a different port on the switch and try the steps again before contacting the helpdesk.

More detail is required before a complete problem description can be completed.

The client needs to switch cables before the helpdesk can begin to resolve the issue.

Question text

After gathering symptoms, if the troubleshooter determines that the problem is located outside the control of the organization, what is the next step?

Select one:

Gather symptoms from suspected devices.

Contact the administrator of the external system.

Question the end users.

Analyze existing symptoms.

Narrow the scope of the problem.

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Which feature sends simulated data across the network and measures performance between multiple network locations?

Select one:

IP SLA

syslog

SPAN

LLDP

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The Answer transmits bits from one computer to another and regulates the transmission of a stream of bits over the physical mediu

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Which statement describes the physical topology for a LAN?

Select one:

It defines how hosts and network devices connect to the LAN.

It depicts the addressing scheme that is employed in the LAN.

It shows the order in which hosts access the network.

It describes whether the LAN is a broadcast or token-passing network.

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A network engineer is troubleshooting a network that has recently been updated with a new routing protocol, but the network is not working as expected. The engineer is comparing the running configuration from before and after the change was made. Which approach to troubleshooting the problem is the engineer using?

Select one:

comparing IP settings on network devices

divide-and-conquer

top-down

bottom-up

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A Answer topology illustrates how devices are logically connected to the network, meaning how devices actually transfer data across the network when communicating with other devices.

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A Answer topology shows the physical layout of the devices connected to the network.

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The show cdp neighbors detail command is used to obtain detailed information about directly connected Cisco neighbor devices.

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Answer are specialized, handheld devices designed for testing the various types of data communication cabling.

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A network administrator issues the telnet www.cisco.com 25 command on the workstation. What is the purpose of this command?

Select one:

to verify that the website is operational

to establish a management session to the web server

to identify the path of network traffic toward the web server

to probe the server that provides the web service to determine if it is also running an email service

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It is a queuing algorithm which feature brings strict priority queuing (PQ) to CBWFQ.

Answer:

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It is a queuing algorithm which extends the standard WFQ functionality to provide support for user-defined traffic classes.

Answer:

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Which model is the only QoS model with no mechanism to classify packets?

Select one:

best-effort

IntServ

DiffServ

hard QoS

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What is the default queuing method used on the LAN interfaces of Cisco devices?

Select one:

CBWFQ

LLQ

WFQ

FIFO

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Answer:

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Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

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It is a type of telnet attack where the attacker may use a list of common passwords, dictionary words, and variations of words to discover the administrative password

Answer:

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It is a queuing algorithm which is an automated scheduling method that provides fair bandwidth allocation to all network traffic.

Answer:

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In the 802.1X standard, the client attempting to access the network is referred to as the supplicant.

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It is an ever increasing requirement of networks today

Select one:

Quality of Service

QoS

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MAC address table flooding attacks are addressed with port security.

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It is a queuing algorithm also known as first-come, first-served (FCFS) queuing, involves buffering and forwarding of packets in the order of arrival.

Answer:

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What mitigation plan is best for thwarting a DoS attack that is creating a switch buffer overflow?

Select one:

Disable STP

Disable DTP

Enable port security

Place unused ports in an unused VLAN

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It is a type of DHCP attack where the attacker configures a fake DHCP server on the network to issue IP addresses to clients.

Answer:

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Which mode is used to configure SNMP?

Select one:

router configuration mode

interface configuration mode

global configuration mode

privileged mode

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VLAN attacks are controlled by disabling DTP and following basic guidelines for configuring trunk ports.

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Delay-sensitive data such as voice is added to a priority queue so that it can be sent first (before packets in other queues).

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It SPAN Terminology which refers to the traffic that enters the switch.

Answer:

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What happens when the memory queue of a device fills up and new network traffic is received?

Select one:

The network device sends the received traffic immediately.

he network device will drop the arriving packets.

The network device drops all traffic in the queue.

The network device queues the received traffic while sending previously received traffic.

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CBWFQ extends the standard WFQ functionality to provide support for user-defined traffic classes.

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Under which condition does congestion occur on a converged network with voice, video, and data traffic?

Select one:

if a user downloads a file that exceeds the file limitation that is set on the server

if video traffic requests more bandwidth than voice traffic requests

if the request for bandwidth exceeds the amount of bandwidth available

if voice traffic latency begins to decrease across the network

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What is an SNMP management agent?

Select one:

a database that a device keeps about network performance

a computer loaded with management software and used by an administrator to monitor a network

a communication protocol that is used by SNMP

software that is installed on devices managed by SNMP

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The show monitor command is used to verify the SPAN session.

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SNMP is an application layer protocol that provides a message format for communication between managers and agents

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It is an SPAN Terminology which refers to the port that is monitored with use of the SPAN feature answer Source (SPAN) port

Answer:

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The LLQ feature brings strict priority queuing (PQ) to CBWFQ.

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What does the FIFO queuing stands for? Answer

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Packets are classified into different flows based on header information including the ToS value.

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Answer allows source and destination ports to be in different switches.

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The Answer feature on Cisco switches is a type of port mirroring that sends copies of the frame entering a port, out another port on the same switch.

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What happens when an edge router using IntServ QoS determines that the data pathway cannot support the level of QoS requested?

Select one:

Data is not forwarded along the pathway.

Data is forwarded along the pathway using IntServ but not provided preferential treatment.

Data is forwarded along the pathway using DiffServ.

Data is forwarded along the pathway using a best-effort approach.

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Answer allows source and destination ports to be in different switches.

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It is a type of DHCP where the attacker floods the DHCP server with bogus DHCP requests and eventually leases all of the available IP addresses in the DHCP server pool.

Answer:

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Which service is enabled on a Cisco router by default that can reveal significant information about the router and potentially make it more vulnerable to attack?

Select one:

LLDP

HTTP

FTP

CDP

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Simple Network Management Protocol (SNMP) was developed to allow administrators to manage nodes such as servers, workstations, routers, switches, and security appliances, on an IP network.

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Network traffic can be marked at both Layer 2 and Layer 3 for QoS..

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Which type of traffic does Cisco recommend be placed in the strict priority queue (PQ) when low latency queuing (LLQ) is being used?

Select one:

voice

management

video

data

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How can SNMP access be restricted to a specific SNMP manager?

Select one:

Define an ACL and reference it by using the snmp-server community command.

Use the snmp-server traps command to enable traps on an SNMP manager.

Use the snmp-server community command to configure the community string with no access level.

Specify the IP address of the SNMP manager by using the snmp-server host command.

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DHCP Answer is a mitigation technique to prevent rogue DHCP servers from providing false IP configuration parameters.

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How many levels of priority are possible when using class of service (CoS) marking on frames?

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What does the WFQ automated scheduling method stands for? Answer

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The Cisco Discovery Protocol (CDP) is a proprietary Layer 2 link discovery protocol.

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Which queuing method provides user-defined traffic classes where each traffic class has a FIFO queue?

Select one:

FIFO

CBWFQ

FCFS

WFQ

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Packets are forwarded in the order in which they are received.

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The Answer QoS model specifies a simple and scalable mechanism for classifying and managing network traffic and providing QoS guarantees on modern IP networks.

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It is a SPAN Terminology which refers to the traffic that leaves the switch.

Answer:

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Packets are assigned to user-defined classes based on matches to criteria such as protocols, ACLs, and input interfaces.

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DHCP is the protocol that automatically assigns a host a valid IP address out of a DHCP pool.

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Which statement describes the QoS classification and marking tools?

Select one:

Classification is performed after traffic is marked.

Classification should be done as close to the destination device as possible.

Marking is the identification of which QoS policy should be applied to specific packets.

Marking is the adding of a value to a packet header.

Which technology could be used to as a secure WAN connection?

Metro Ethernet Ethernet over Synchronous Optical Network (SONET) technology is used for secure point to point WAN connectivity.

Which WAN technology provides a secure connection to a private network over public lines?

VPN Technology (1.2. To address security concerns, broadband services provide capabilities for using VPN connections to a network device that accepts VPN connections, which are typically located at the corporate site. A VPN is an encrypted connection between private networks over a public network, such as the Internet.

Which technology is used in WAN technologies?

WAN technologies are either circuit-switched or packet-switched. The type of device used depends on the WAN technology implemented.

Which of the following is an example of a public WAN?

Wide Area Network The Internet is the best-known example of a public WAN.