Monday, September 24, 2012

CCNA Questions Part 5

More Questions for those interested in all things network. Enjoy

1. Trunk links are used to communicate between...

A) Two switches
B) A switch and router
C) A switch and server
D) A switch and PC
E) A, B and C are correct

2. What are the 3 ways of assigning a switched port to VLANs?

A) Switch-centric, Port-centric, Dynamic VLANs
B) Port-centric, Static VLANs, Dynamic VLANs
C) Interface-based, Static VLANs, Dynamic VLANs

3. Which of the following could be a valid MAC address?

A) 00-08-74-CE-B7-90

4. What is the invalid timer set to by default when you have a router running the Interior Gateway Routing Protocol? (IGRP)

A.) 3 times the update period
B.) 270 seconds
C.) 3 times the update period + 10 seconds
D.) Answer A and B
E.) 7 times the update period

5. Which protocol is used to determine the IP address if the MAC address is already known?

C.) IP

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1. Correct Answer: E

A trunk link is a point-to-point link between two switches, a switch and router or a switch and server which carries multiple VLAN traffic.

2. Correct Answer: B

3 ways of assigning a switched port to VLANs:

  • Port-Centric - All nodes connected to ports in the same VLAN are assigned to the same VLAN ID.
  • Static VLANs - Statically assign ports to a VLAN.
  • Dynamic VLANs - Ports that can automatically determine their VLAN assignments based on MAC addresses
3. Correct Answer: A

The standard format for printing MAC addresses is six groups of two hexadecimal digits, separated by hyphens (-) or colons (:) e.g. 00-08-74-CE-B7-90, 00:08:74:CE:B7:90.
Another convention commonly used is three groups of four hexadecimal digits separated by dots e.g. 0573.4567.19ab.

4. Correct Answer: D

IGRP sends its routing table to its neighbors every 90 seconds. IGRP uses an invalid timer to mark a route as invalid after 270 seconds (three times the update timer). IGRP uses a flush timer to remove a route from the routing table (default flush timer is 630 seconds, seven times the update period).

5. Correct Answer B

Reverse Address Resolution Protocol (RARP) is a networking protocol used by a host computer to request its IP address from an administrative host, when it knows its MAC address.

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