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IP Routing 3

November 7th, 2017 Go to comments

Question 1

Explanation

Floating static routes are static routes that have an administrative distance greater than the administrative distance (AD) of another static route or dynamic routes. By default a static route has an AD of 1 then floating static route must have the AD greater than 1. Floating static route has a manually configured administrative distance greater than that of the primary route and therefore would not be in the routing table until the primary route fails.

Question 2

Explanation

A host route for IPv4 has the mask /32, and a host route for IPv6 has the mask /128. If an IPv4 address is configured with a mask of /32 on an interface of the router, which is typical for loopback interfaces, the host route appears in the routing table only as connected (for example in the routing table we will see this line: “C 10.10.10.1/32 is directly connected, Loopback0”.

Reference: https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/116264-technote-ios-00.html

Question 3

Explanation

If the IP address exists in the routing table then we can say the local router knew the way to reach that destination. But this question wants to ask if the destination has communicated to the local router or not (“an IP address is known to a router”). Maybe it is a tricky question.

Question 4

Explanation

In all the way on the path, the source and destination IP addresses never change, only the source and destination MAC address are changed on each segment.

Question 5

Question 6

Comments (1) Comments
  1. Stark
    December 7th, 2017

    hi 9tut,

    where can i find questions for these?

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