LPIC-1 Exam 102, Part 2 of 2, version 5.0 102-500 Question # 10 Topic 2 Discussion
102-500 Exam Topic 2 Question 10 Discussion:
Question #: 10
Topic #: 2
On a regular users workstation the route command takes a long time before printing out the routing table. Which of the following errors does that indicate?
A.
The local routing information may be corrupted and must be re-validated using a routing protocol.
B.
One of the routers in the routing table is not available which causes the automatic router failure detection mechanism (ARF-D) to wait for a timeout.
C.
There may accidentally be more than one default router in which case a default router election has to be done on the network in order to choose one router as the default.
D.
DNS resolution may not be working as route by default tries to resolve names of routers and destinations and may run into a timeout.
The route command displays the kernel’s routing table, which contains information about how packets are routed to different destinations. By default, route tries to resolve the IP addresses of the routers and destinations to their hostnames using DNS. If DNS is not working properly, this can cause a delay in displaying the routing table as route waits for the DNS queries to time out. To avoid this, route can be used with the -n option, which prevents DNS lookups and displays only numeric addresses. References:
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