Tuesday, May 21, 2013

Cisco based exam questions part ix




Random networking questions for those curious, wanting to refresh or studying for Cisco certification.




1. In a local broadcast all bits set to 1 received by all hosts on local and remote broadcast domains?

A) True
B) False


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

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 


3. 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


 4. What OSI layer does the following refer to?

"Establishes availability of intended communication partners, establishes agreement on procedures regarding error recovery and data integrity and synchronizes networked applications"

A) Transport layer
B) Session layer
C) Datalink layer
D) Application layer
E) Presentation layer


5. Which of the following protocols do not form part of the TCP/IP Internet Layer?

A.) IP
B.) ICMP
C.) FTP
D.) ARP
E.) RARP









1. Correct Answer: B

Explanation
Routers don't forward broadcasts so local broadcasts will stay on the broadcast domain from which they originated.


2. Correct Answer: D

Explanation
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).


3. Correct Answer: B

Explanation
3 ways of assigning a switched port to VLANs:

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


4. Correct Answer: D

Explanation
The Application layer of the OSI model (layer 7) establishes availability of intended communication partners, establishes agreement on procedures regarding error recovery and data integrity and synchronizes networked applications.


5. Correct Answer C

Explanaition
FTP is an application layer protocol and not part of the TCP/IP suit.