Chapter 33

Question 1

What is the benefit of cluster

Answer 1

Multiple computer provide same service. For example, one request comes in, then one computer allotted. Then another request comes in, then some other computer allotted.

Question 2

Does ICMP and IP co-independent

Answer 2

Yes

Question 3

Does ICMP careless protocol

Answer 3

No

Question 4

Does ICMP encapsulated in IP

Answer 4

Yes

Question 5

When ICMP message generated

Answer 5

In the response of IP datagram

Question 6

What is trace route using ICMP

Answer 6

We trace the ip addresses in path/router using TTL field

Question 7

What 2 methods are used in last address of trace route command

Answer 7

1. Send an ICMP echo request, destination host will generate an ICMP echo reply.
2. Send a datagram to a non-existing application, destination host will generate an ICMP destination unreachable message.

Question 8

Microsoft used which method for last address of trace route

Answer 8

1. Send an ICMP echo request, destination host will generate an ICMP echo reply using traceRT command

Question 9

Unix used which method for last address of trace route

Answer 9

2. Send a datagram to a non-existing application, destination host will generate an ICMP destination unreachable message using UDP (user datagram protocol)

Question 10

what is IP address fragmentation

Answer 10

IP fragmentation is the process of breaking up a single Internet Protocol (IP) datagram into multiple packets of smaller size. Every network link has a characteristic size of messages that may be transmitted, called the maximum transmission unit (MTU).

Question 11

What is MTU

Answer 11

Every network link has a characteristic size of messages that may be transmitted, called the maximum transmission unit (MTU).

Question 12

Does IP datagram has any priority concept

Answer 12

No

Question 13

Does we create ICMP error message if ICMP message get lost

Answer 13

No

Question 14

Does ping command use for ICMP messages

Answer 14

Yes