640 - 607
Answer:
Explanation: In order for a Class B IP, such as 172.12.0.0, to have 458 IP available on each subnet then a subnet mask of 255.255.254.0. This subnet mask provides for 126 subnets and 510 IPs.
Steve McQuerry. Interconnecting Cisco Network Devices. (Cisco Press: 2000) page 234.
Q.33
Exhibit:
Router_B#show ip route
Codes:
Gateway of last resort is not set
R192.168.8.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0 C 192.168.9.0/24 is directly connected, Serial 1
R 192.168.10.0/24 [120/7] via 192.168.9.1, 00:00:02, Serial1 R 192.168.11.0/24 [120/7] via 192.168.9.1, 00:00:03, Serial1 C 192.168.1.0/24 is directly connected, Ethernet0
C 192.168.2.0/24 is directly connected, Serial0
R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0 R 192.168.4.0/24 [120/15] via 192.168.2.2, 00:00:10, Serial0 R 192.168.5.0/24 [120/15] via 192.168.2.2, 00:00:10, Serial0 R 192.168.6.0/24 [120/15] via 192.168.2.2, 00:00:10, Serial0 R 192.168.7.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0
Which route will not be entered into the routing table of the receiving router?
A.R 192.168.3.0/24 [120/1] via 192.168.2.2, 00:00:10, Serial0
B.R 192.168.11.0/24 [120/7] via 192.168.9.1, 00:00:03, Serial1
C.C 192.168.1.0/24 is directly connected, Ethernet0
D.R 192.168.5.0/24 [120/15] via 192.168.2.2, 00:00:10, Serial0
Answer: D
Explanation: This route has the lowest metric of those listed and as such will not be shared with the neighbor.
Incorrect Answers:
A is incorrect; this has the best metric thus it will be shared.
B is incorrect; this route has a better metric therefore it will be shared.
C is incorrect; this is a directly connected network thus it will be shared.
Leading the way in IT testing and certification tools, www.testking.com
- 27 -
