Monday 19 December 2016

N10-005 Exam Question

Question: 25

Which of the following is always true when a router selects a destination?

A. The default gateway is selected over any other static or dynamic route.
B. The shortest route is always selected.
C. The most specific route is selected over the default gateway.
D. A dynamic route is selected over a directly attached network.

Answer: C

Explanation:

Router always looks for the most closely matched route for forwarding the packet. For example if there are two routes in your router and you have to send a packet to a host with an ip 10.10.10.10 then it will forward packet to 192.168.1.10 rather than 192.168.1.1:

Network Destination Netmask Gateway
0.0.0.0 0.0.0.0 192.168.1.1
10.10.10.0 255.255.255.0 192.168.1.10

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