How to win with 200 125 ccna book

200-125 Guide

200-125 Exam Royal Pack (In Stock.)

 
  • Cisco
  • Exam Number/Code 200-125
  • Product Name CCNA Cisco Certified Network Associate CCNA (v3.0)
  • Questions and Answers
  • 635 Q&As
  • Last Updated
  • Nov 06,2018
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How to win with 200 125 ccna book

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Q91.  - (Topic 5)

Which command enables IPv6 forwarding on a Cisco router?

A. ipv6 local

B. ipv6 host

C. ipv6 unicast-routing

D. ipv6 neighbor

Answer: C

Explanation:

To enable IPv6 routing on the Cisco router use the following command: ipv6 unicast-routing

If this command is not recognized, your version of IOS does not support IPv6.


Q92.  - (Topic 8)

Which statement about LLDP is true?

A. It is a Cisco proprietary protocol.

B. It is configured in global configuration mode.

C. The LLDP update frequency is a fixed value.

D. It runs over the transport layer.

Answer: B


Q93.  - (Topic 8)

Which HSRP feature was new in HSRPv2?

A. VLAN group numbers that are greater than 255

B. virtual MAC addresses

C. tracking

D. preemption

Answer: A


Q94.  - (Topic 4)

It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit. Which of the following procedures are required to accomplish this task? (Choose three.)

A. Remove the IP address from the physical interface.

B. Encapsulate the physical interface with multipoint PPP.

C. Create the virtual interfaces with the interface command.

D. Configure each subinterface with its own IP address.

E. Disable split horizon to prevent routing loops between the subinterface networks.

F. Configure static Frame Relay map entries for each subinterface network.

Answer: A,C,D

Explanation:

For multiple PVC’s on a single interface, you must use subinterfaces, with each subinterface configured for each PVC. Each subinterface will then have its own IP address, and no IP address will be assigned to the main interface.


Q95.  - (Topic 4)

What is the purpose of Inverse ARP?

A. to map a known IP address to a MAC address

B. to map a known DLCI to a MAC address

C. to map a known MAC address to an IP address

D. to map a known DLCI to an IP address

E. to map a known IP address to a SPID

F. to map a known SPID to a MAC address

Answer: D

Explanation:

Dynamic address mapping relies on the Frame Relay Inverse Address Resolution Protocol (Inverse ARP), defined by RFC 1293, to resolve a next hop network protocol (IP) address to a local DLCI value. The Frame Relay router sends out Inverse ARP requests on its Frame Relay PVC to discover the protocol address of the remote device connected to the Frame Relay network. The responses to the Inverse ARP requests are used to populate an address-to-DLCI mapping table on the Frame Relay router or access server. The router builds and maintains this address-to-DLCI mapping table, which contains all resolved Inverse ARP requests, including both dynamic and static mapping entries.


Q96.  - (Topic 5)

What are the alert messages generated by SNMP agents called?

A. TRAP

B. INFORM

C. GET

D. SET

Answer: A,B

Explanation:

A TRAP is a SNMP message sent from one application to another (which is typically on a remote host). Their purpose is merely to notify the other application that something has happened, has been noticed, etc. The big problem with TRAPs is that they’re

unacknowledged so you don’t actually know if the remote application received your oh-so- important message to it. SNMPv2 PDUs fixed this by introducing the notion of an INFORM, which is nothing more than an acknowledged TRAP.


Q97.  - (Topic 8)

Which two statements about northbound and southbound APIs are true? (Choose two.)

A. Only southbound APIs allow program control of the network.

B. Only northbound APIs allow program control of the network.

C. Only southbound API interfaces use a Service Abstraction Layer.

D. Only northbound API interfaces use a Service Abstraction Layer.

E. Both northbound and southbound API interfaces use a Service Abstraction Layer.

F. Both northbound and southbound APIs allow program control of the network.

Answer: B,C


Q98.  - (Topic 5)

A network engineer wants to allow a temporary entry for a remote user with a specific username and password so that the user can access the entire network over the Internet.

Which ACL can be used?

A. standard

B. extended

C. dynamic

D. reflexive

Answer: C

Explanation:

We can use a dynamic access list to authenticate a remote user with a specific username and password. The authentication process is done by the router or a central access server such as a TACACS+ or RADIUS server. The configuration of dynamic ACL can be read here: http://www.cisco.com/en/US/tech/tk583/tk822/technologies_tech_note09186a0080094524. shtml


Q99.  - (Topic 4)

What are three reasons that an organization with multiple branch offices and roaming users might implement a Cisco VPN solution instead of point-to-point WAN links? (Choose three.)

A. reduced cost

B. better throughput

C. broadband incompatibility

D. increased security

E. scalability

F. reduced latency

Answer: A,D,E

Explanation:

IPsec offer a number of advantages over point to point WAN links, particularly when multiple locations are involved. These include reduced cost, increased security since all traffic is encrypted, and increased scalability as s single WAN link can be used to connect to all locations in a VPN, where as a point to point link would need to be provisioned to each location.


Q100. DRAG DROP - (Topic 7)

Drag each category on the left to its corresponding router output line on the right. Each router output line is the result of a show ip interface command. Not all categories are used.

Answer:

Explanation:

A simple way to find out which layer is having problem is to remember this rule: “the first statement is for Layer 1, the last statement is for Layer 2 and if Layer 1 is down then surely Layer 2 will be down too”, so you have to check Layer 1 before checking Layer 2. For example, from the output “Serial0/1 is up, line protocol is down” we know that it is a layer 2 problem because the first statement (Serial0/1 is up) is good while the last statement (line protocol is down) is bad. For the statement “Serial0/1 is down, line protocol is down”, both layers are down so the problem belongs to Layer 1.

There is only one special case with the statement “…. is administrator down, line protocol is down”. In this case, we know that the port is currently disabled and shut down by the administrators.


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