Reviewer for Networking Examination

Reviewer. The answer is filled in with a circle around the letters.

1. Which description of the nonsecret numbers that are used to start a Diffie-
Hellman exchange is true?
a. They are very small numbers chosen from a table of known
b. They are preconfigured prime integers
c. They are numeric values extracted from hashed system hostnames
d. They are large pseudorandom numbers

2. Which statement about the OSPF Router ID are true?
a. By default, the lowest IP address on the router becomes the OSPF Router
ID.
b. It is created using the MAC Address of the loopback interface.
c. It identifies the source of a Type 1 LSA.
d. It should be the same on all routers in an OSPF routing instance.

3. Which port state is introduced by Rapid-PVST?
a. Learning
b. Listening
c. Discarding
d. Forwarding

4. Which wildcard mask is associated with a subnet mask of /27?
a. 0.0.0.27
b. 0.0.0.255
c. 0.0.0.224
d. 0.0.0.31

5. In the router ospf 200 command, what does the value 200 stand for?
a. administrative distance val
b. area ID
c. process ID
d. ABR ID

6. Which command can be issued without interfering with the operation of loop
guard?
a. Switch(config-if)#spanning-tree gurad root
b. Switch(config-if)#spanning-tree portfast
c. Switch(config-if)#switvhport mode access
d. Switch(config-if)#switchport mode trunk

7. Which statement is true about the command ipv6 OSPF 1 area 0?
a. it must be issued after the network command to enable the OSPF process
for IPv6.
b. it must be issued in router global configuration mode to enable the OSPF
process for IPv6.
c. it must be issued in interface configuration mode to enable the OSPF for
IPv6.
d. it must be issued before the network command to enable the OSPF process
for IPv6.

8. Which command is used to display the collection of OSPF link states?
a. show ip ospf link-state
b. show ip ospf lsa database
c. show ip ospf neighbors
d. show ip ospf database