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PROGRAM
BSC IT
SEMESTER
2
SUBJECT
CODE &
NAME
BT0072,
COMPUTER NETWORKS
Qus:1
What is Message switching and Packet switching?
Answer:
Message
switching:
Message switching was
the precursor of packet switching, where messages were routed in their entirety
and one hop at a time. It was first introduced by Leonard Kleinrock in 1961.
Message switching systems are nowadays mostly implemented over packet-switched
or circuit-switched
Qus:2
What is Framing? Briefly explain Fixed-Size Framing, Variable Size Framing.
Answer:
Framing:
Data transmission in
the physical layer means moving bits in the form of a signal from the source to
destination. The physical layer provides bit synchronization to ensure that the
sender and receiver use the same bit durations and timing.
Qus:3
What is Stop-and-Wait Automatic Repeat Request? Briefly explain.
Answer:
Stop-and-Wait
Automatic Repeat Request:
This protocol
adds a simple error control mechanism to the stop-and-wait protocol. To detect
and correct corrupted frames, we need to add redundancy bits to our data frame.
When the frame arrives at the receiver site, it is checked and if it is
corrupted, it is silently discarded. The detection of errors in this protocol
is manifested by the silence of the receiver. Lost frames are more difficult to
handle than corrupted ones. The corrupted and lost frames need to be resent in
Qus:4
What is the role of Internet Protocol version 4 (IPV4) in addressing and
routing packets between hosts? Briefly explain the structure of an IPV4 packet.
Answer:
The
role of Internet Protocol version 4 (IPV4) in addressing and routing packets
between hosts:
IPV4 is a datagram
protocol primarily responsible for addressing and routing packets between
hosts. IPV4 is connectionless, which means that it does not establish a
connection before exchanging data, and unreliable, which means that it does not
guarantee packet delivery. IPV4 always makes a “best effort” attempt to deliver
a packet.
Qus:5
How SMTP works? Briefly explain applications of SMTP.
Answer:
SMTP
works:
SMTP is based on end-to-end delivery: An SMTP client
contacts the destination host's SMTP server directly, on well-known port 25, to
deliver the mail. It keeps the mail item being transmitted until it has been
successfully copied to the recipient's SMTP. This is different from the
store-and-forward principle that is common in many mailing systems, where the
mail item can pass through a number of intermediate hosts in the same network
on its way to the
Qus:6
What is SSL protocol? How SSL handles a message?
Answer:
SSL
protocol:
The SSL protocol
is located at the top of the transport layer. SSL is also a layered protocol
itself. It simply takes the data from the application layer, reformats it, and
transmits it to the transport layer.
Get fully solved assignment, plz drop a mail with your sub code
computeroperator4@gmail.com
Charges for mba rs 125/subject and rs 700/semester only.
For other rs 125/subject only
if urgent then call us
on 08791490301, 08273413412
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