6) The tool traceroute on The tool traceroute relays n W unknown the following 2

Question

6) The tool traceroute on The tool traceroute relays n W unknown the following 2 bytes: 11011011 and 01100101. What is the b) 01000001 ) 01000000 d)10111111 a) echo reply c) TTL expired b) dest host unknown d) router discovery ppose you have the following 1s complement of the sum o 8) Which function n h a) Flow of n is not provided by link layer? contro suncthion ob) Eor say that UDP is faster than TCP, select a reason which is wrong. to establish the connection before sending out a data, UDP without c) Framing 9) People always that d) Congestion control UDP is faster t connection establishment b) TCP has procedure slow data immediately c) TCP w start and additive increase; UDP sends out all received packet is larger than UDP packet. buckets ket based traffic shaping, R-200Mbps, B-9600KB. At begging, the 1 b) 75 c) 87 d)93 10) F ser sends data 1000Mbps. How long this rate can last?

Explanation / Answer

6)

Traceroute is used to find the path or in other words to get the list of routers.

In ICMP , TTL(time to live) is used to determine the number of routers in apth from source to destination.

In start TTL is 1 , when packet reaches router it decrement TTL value by 1 and discard the packet when TTL reaches 0 returning TTL exceeded or TTL expired message. Next time when packet is send it is given TTL =2 and so on till it reaches destination.

So, correct option is c)

7.

Given 2bytes are : 11011011 and 01100101

1 1 0 1 1 0 1 1

+ 0 1 1 0 0 1 0 1

--------------------------------------

1 0 1 0 0 0 0 0 0

1 in MSB defines overflow, so wrap around i.e. 01000000+ 1 = 01000001

1's complement of 01000001 is 10111110

So, correct option is a

8.

Functions of data link layer are Flow control, error detection,framing .

Congestion control is network layer's function.

So, correct option is d

9.

TCP is connection oriented protocol whereas UDP is connection-less.

TCP requires handshaking for establishment of connection i.e. sending and receiving ACK and SYN. There is no such thing in UDP , it transmits all received data immediately.

So,correct option is c

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