Q:

Convert 10100010111101011001110110001011 2 to dotted decimal.

Answer

Convert to dotted hexadecimal first, and then convert each hexadecimal number pair to decimal.

A2.F5.9D.8B then 162.245.157.139

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14 2652
Q:

Assume a router has a loopback address of 135.77.9.254. Convert the loopback address to an IS-IS system ID.

Answer

The loopback address written in dotted decimal and using three digits for each byte has a value of 135.077.009.254. The system ID is 13.50.77.00.92.54.

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0 793
Q:

Convert FACE1234 16 to dotted decimal.

Answer

Answer: FA 16 = 250 10, CE 16 = 206 10, 12 16 = 18 10, and 34 16 = 52 10

FACE1234 16 = 250.206.18.52 dotted decimal

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0 655
Q:

Why is BGP a better choice for Internet routing than the IGPs?

Answer

RIP version 1 and IGRP are classful protocols and do not advertise subnet mask information. RIP version 2 has a limited network diameter of 15 hops. EIGRP, OSPF, and IS-IS use computational intensive algorithms for determining a shortest path. BGP relies on simple techniques for best path selection and loop detection, and can handle the number of network prefixes required for Internet routing.

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3 647
Q:

What is the purpose of the AS_PATH attribute?

Answer

If a router has more than one route to the same IP prefix, the best path is the one with the shortest AS_PATH (assuming other BGP attributes are equal).

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0 625