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 CISCO Certification Questions

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Q:

Assume a router has a loopback address of 135.77.9.254. Convert the loopback address to an IS-IS system ID.

Answer

The loopback address written in dotted decimal and using three digits for each byte has a value of 135.077.009.254. The system ID is 13.50.77.00.92.54.

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Subject: CCNP

1 1851
Q:

In thefollowing output, what type of NAT is being used?

ip nat pool todd-nat 170.168.10,10 170.168.10.20 netmask 255.255.255.0

Answer

Dynamic NAT

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Subject: CCNA

0 1830
Q:

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You are the administrator of network X. You decided to implement RIP in the following topology (click exhibit). You do not want R3 to receive RIP updates. What configuration changes need to be implemented?

A) Implement a passive-interface on R1 B) Nothing needs to be configured
C) Create a sub-interface on R1 D) Change the routing protocol to OSPF
 
Answer & Explanation Answer: A) Implement a passive-interface on R1

Explanation:

Explanation: To block RIP broadcasts on an interface connected to a subnet of a RIP-enabled network add the passive-interface command to the RIP Process

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Filed Under: CCENT

0 1823
Q:

What command would you use to set an access list on a VTY line?

Answer

line vty 0 4


access - class 110 in 

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Subject: CCNA

0 1793
Q:

Identify the fields in the Data Link portion of an Ethernet frame?

Answer

The fields in the Data Link portion of a frame include the Preamble, Start Frame Delimiter, Destination MAC address, Source MAC address, Length or Type, Data, and Frame Check Sequence.

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Subject: CCNA

0 1790
Q:

Which Cisco 802.1d extension stops BPDU from being transmitted out a port?

Answer

PortFast

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Subject: CCNA

0 1779
Q:

What is the purpose of the AS_PATH attribute?

Answer

If a router has more than one route to the same IP prefix, the best path is the one with the shortest AS_PATH (assuming other BGP attributes are equal).

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Subject: CCNP

0 1750
Q:

What is the Classs A Private IP address space?

Answer

10.0.0.0 through 10.255.255.255

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Subject: CCNA

0 1701