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PROGRAM
BSC IT
SEMESTER
2
SUBJECT
CODE &
NAME
BCA4010,
COMPUTER NETWORKS
Q1 What is Fast Ethernet? Explain in brief. [10] 10
Answer:
Fast
Ethernet is a collective term for a number of Ethernet standards that carry
traffic at the nominal rate of 100 Mbit/s, against the original Ethernet speed
of 10 Mbit/s. Of the 100 megabit Ethernet standards 100baseTX is by far the
most common and is supported by the vast majority of Ethernet hardware
currently produced. Full duplex fast Ethernet is sometimes referred to as
"200 Mbit/
Q2 How are services of data link layer categorized?
Explain in brief
Answer:
The services of the data link
layer can be categorized as:
1.
Unacknowledged Connectionless Service: In this the
source machine sends independent frames to the destination machine without
having the destination machine acknowledge them. No connection is
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
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,
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-
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.
SSL
handles
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