Register

Web Page

Concept of layering.OSI and TCP/IP Protocol Stacks; Basics of packet, circuit and virtual circuit-switching; Data link layer: framing, error detection, Medium Access Control, Ethernet bridging; Routing protocols: shortest path, flooding, distance vector and link state routing; Fragmentation and IP addressing, IPv4, CIDR notation, Basics of IP support protocols (ARP, DHCP, ICMP), Network Address Translation (NAT); Transport layer: flow control and congestion control, UDP, TCP, sockets; Application layer protocols: DNS, SMTP, HTTP, FTP, Email.

.$$\scriptsize{\overset{{\large{\textbf{Mark Distribution in Previous GATE}}}}{\begin{array}{|c|c|c|c|c|c|c|c|}\hline
\textbf{Year}& \textbf{2024-1} & \textbf{2024-2} & \textbf{2023}&  \textbf{2022} & \textbf{2021-1}&\textbf{2021-2}&\textbf{Minimum}&\textbf{Average}&\textbf{Maximum}
\\\hline\textbf{1 Mark Count} & 3&3&2& 2 &1&1&1&2&3
\\\hline\textbf{2 Marks Count} & 3&3&3& 4 &4&3&3&3.33&4
\\\hline\textbf{Total Marks} & 9&9&8& 10 &9&7&\bf{7}&\bf{8.67}&\bf{10}\\\hline
\end{array}}}$$

Filter

Recent questions in Computer Networks

#1661
2.1k
views
1 answers
1 votes
Forwarding by router
Consider the following routing table of a router.Consider the following three IP addresses.How are the packets with above three destination IP addresses are forwarded?(A) 1->D, 2->B, 3->B(B) 1->D ... (C) 1->B, 2->D, 3->D(D) 1->D, 2->D, 3->D
User Avatar
#1662
3.6k
views
1 answers
0 votes
Bit Rate - Baud Rate
An analog signal has a bit rate of 8000 bps and a baud rate of 1000.Then analog signal has _____ signal elements and carry _____ data elements in each signal.(A) 256, 8 bits(B) 128, 4 bits(C) 256, 4 bits(D) 128, 8 bits
User Avatar
#1663
1.8k
views
1 answers
1 votes
Error detection
Let C be a binary linear code with minimum distance 2t + 1 then it can correct upto _____ bits of error.At + 1BtCt - 2Dt / 2
User Avatar
#1664
1.3k
views
1 answers
0 votes
Token Ring - ISRO | ISRO CS 2016
In a token ring network the transmission speed is $10^7$ bps and the propagation speed is 200 meters/ μs. The 1-bit delay in this network is equivalent to:(A) 500 ... B) 200 meters of cable.(C) 20 meters of cable.(D) 50 meters of cable.
User Avatar
#1665
1.8k
views
1 answers
2 votes
Computer Networks: efficiency - Gate 2018 mock set 2
Which of the following statement is False about the efficiency of the given channel ?AIf we want to send big packets on the channel, then Stop and Wait ... to efficiency of channel.DEfficient might be less if capacity of channel is high
User Avatar
#1666
343
views
0 answers
1 votes
gate CN
according to new syllabus token rings concept is removed from gate syllabus,so, should i leave it or study it for being in safer side?
User Avatar
#1667
1.7k
views
1 answers
0 votes
Computer Networks by Andrew S. Tanenbaum, 4th edition chapter:5 (The Network Layer), Question:5
Consider the following design problem concerning implementation of virtual- circut service. If virtual circuits are used internal to the subnet, each data packet ... mean packet requires four hops. Which implementation is cheaper and why?
User Avatar
#1668
326
views
1 answers
0 votes
Network layer,router,forouzan
why routers have two physical and data layers but only one network layer?
User Avatar
#1669
998
views
2 answers
0 votes
Time to live
When is TTL decreased?1- only at routers?2- any device having network layer (including hosts in between the path) :example: source subnet has ethernet and ... come in packets.s path will decrease TTL or only router will decrease TTL?
User Avatar
#1670
1.0k
views
2 answers
3 votes
TCP - Stanford Lectures
In one of the quizes, they asked the following question :"A server typically listens for TCP connections on a particular port (e.g. 80 for HTTP or 22 for ... ... (After all, this destination IP address corresponds to the Server itself !).
User Avatar
#1671
432
views
1 answers
0 votes
doubt
Can anyone derive efficiency formula of CSMA/CD please?
User Avatar
#1672
11.7k
views
1 answers
0 votes
Pure ALOHA
A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the throughput if the system (all stations together) produces 1000 frames per second?Please solve by mentioning step by step procedure!
User Avatar
#1673
410
views
1 answers
0 votes
Doubt
In RTT(round trip time),why do we need to calculate the transmission time? bcz-"round-trip delay time (RTD) or round-trip time (RTT) is the length of ... between the two points of a signal."REf: https://gateoverflow.in/43470/gate2009-58
User Avatar
#1674
6.7k
views
2 answers
0 votes
basic question
Q1 one of the following is not the type of active attackA. Denial of servicesB MasqueradesC. Fabrication D. Traffic analysisif possible try to explain each option i tried to read it from wiki but didn't get more clarity
User Avatar
#1675
1.6k
views
0 answers
0 votes
test series
A Selective Repeat ARQ and Go-Back-n ARQ uses a window of size 31. The number of bits needed to define sequence numbers respectively are?also my ... represent of sender window size+receiver window size or only represent sender window size
User Avatar
#1676
1.1k
views
1 answers
1 votes
Circuit switching
If two host are connected by a link and in middle of the link there is a switch between them, then transmission and propagation time both doubled.But ... same link, why only a switch doubles propagation delay and transmission delay time?
User Avatar
#1677
147
views
0 answers
0 votes
Congestion control
What is the best resource to study congestion control?
User Avatar
#1678
896
views
1 answers
0 votes
Firewall
" Firewall will only allow external hosts to send packets on existing open TCP connections or connections that are being opened (by internal hosts) but not allow ... will arise, if it open TCP connections to hosts in the private network ?
User Avatar
#1679
2.0k
views
1 answers
0 votes
What is the relation between sender window size and various terms like last acknowledged frame , last sent frame , etc ?
Please explain ques 43 .
User Avatar
#1680
192
views
1 answers
0 votes
Doubt
Why there is need to convert IP address to Domain name ?
User Avatar
Page: