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MAC Sublayer
Recent questions tagged mac-protocol
3
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1
Forouzan book :- Throughput of a network
There are only three active stations in a slotted aloha network :A,B,C.Each station generates a frame in a time slots with the corresponding probabilities $P_{A}=0.2,P_{B}=0.3,P_{C}=0.4$ respectively. What is the throughput of each station? What is the throughput of entire network?
Kabir5454
asked
in
Computer Networks
May 28, 2022
by
Kabir5454
1.7k
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throughput
computer-networks
slotted-aloha
mac-protocol
25
votes
2
answers
2
GATE CSE 2021 Set 2 | Question: 54
Consider a network using the pure $\text{ALOHA}$ medium access control protocol, where each frame is of length $1,000$ bits. The channel transmission rate is $1$ Mbps ($=10^6$ bits per second). The aggregate number ... the average number of frames successfully transmitted per second. The throughput of the network (rounded to the nearest integer) is ______________
Arjun
asked
in
Computer Networks
Feb 18, 2021
by
Arjun
13.7k
views
gatecse-2021-set2
computer-networks
mac-protocol
pure-aloha
numerical-answers
2-marks
0
votes
0
answers
3
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 16 (Page No. 352)
Two CSMA/CD stations are each trying to transmit long (multiframe) files. After each frame is sent, they contend for the channel, using the binary exponential backoff algorithm. What is the probability that the contention ends on round k, and what is the mean number of rounds per contention period?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
920
views
computer-networks
mac-protocol
ethernet
csma-cd
tann
tanenbaum
0
votes
0
answers
4
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 15 (Page No. 352)
A 1-km-long, 10-Mbps CSMA/CD LAN (not 802.3) has a propagation speed of 200 m/μsec. Repeaters are not allowed in this system. Data frames are 256 bits long, including 32 bits of header, checksum, and ... send a 32-bit acknowledgement frame. What is the effective data rate, excluding overhead, assuming that there are no collisions?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
641
views
computer-networks
tanenbaum
mac-protocol
ethernet
csma-cd
0
votes
0
answers
5
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 14 (Page No. 352)
Sketch the Manchester encoding on a classic Ethernet for the bit stream 0001110101.
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
481
views
computer-networks
tanenbaum
data-link-layer
mac-protocol
manchester-encoding
0
votes
1
answer
6
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 13 (Page No. 352)
What is the baud rate of classic 10-Mbps Ethernet?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
774
views
computer-networks
mac-protocol
serial-communication
tanenbaum
0
votes
0
answers
7
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 12 (Page No. 351)
A seven-story office building has 15 adjacent offices per floor. Each office contains a wall socket for a terminal in the front wall, so the sockets form a rectangular grid in the vertical plane, with a separation of 4 m between ... sockets using (a) A star configuration with a single router in the middle? (b) A classic 802.3 LAN?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
328
views
computer-networks
tanenbaum
mac-protocol
mac-layer
data-link-layer
0
votes
1
answer
8
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 10 (Page No. 351)
Consider five wireless stations, A, B, C, D, and E. Station A can communicate with all other stations. B can communicate with A, C and E. C can communicate with A, B and D. D can communicate with A, C and ... is sending to A, what other communications are possible? (c) When B is sending to C, what other communications are possible?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
1.8k
views
computer-networks
tanenbaum
mac-protocol
lan-technologies
communication
0
votes
0
answers
9
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 1 (Page No. 350)
Frames arrive randomly at a 100-Mbps channel for transmission. If the channel is busy when a frame arrives, it waits its turn in a queue. Frame length is exponentially distributed with a mean of 10,000 bits/frame. For each of the ... queueing time and transmission time. (a) 90 frames/sec. (b) 900 frames/sec. (c) 9000 frames/sec.
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
678
views
computer-networks
tanenbaum
mac-protocol
data-link-layer
network-flow
0
votes
1
answer
10
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 7 (Page No. 351)
How long does a station, s, have to wait in the worst case before it can start transmitting its frame over a LAN that uses the basic bit-map protocol?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
1.9k
views
computer-networks
tanenbaum
mac-protocol
lan-technologies
bit-map-protocol
0
votes
0
answers
11
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 5 (Page No. 351)
In an infinite-population slotted ALOHA system, the mean number of slots a station waits between a collision and a retransmission is 4. Plot the delay versus throughput curve for this system.
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
654
views
computer-networks
tanenbaum
mac-protocol
lan-technologies
slotted-aloha
0
votes
1
answer
12
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 4 (Page No. 351)
A large population of ALOHA users manages to generate 50 requests/sec, including both originals and retransmissions. Time is slotted in units of 40 msec. (a) What is the chance of success on the first attempt? (b) ... of exactly k collisions and then a success? (c) What is the expected number of transmission attempts needed?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
1.7k
views
computer-networks
tanenbaum
mac-protocol
slotted-aloha
lan-technologies
0
votes
2
answers
13
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 3 (Page No. 351)
Consider the delay of pure ALOHA versus slotted ALOHA at low load. Which one is less? Explain your answer.
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
5.6k
views
computer-networks
tanenbaum
mac-protocol
pure-aloha
slotted-aloha
3
votes
1
answer
14
Andrew S. Tanenbaum Edition 5 Exercise 4 Question 2 (Page No. 351)
A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a 1000-bit frame on average once every 100 sec, even if the previous one has not yet been sent (e.g., the stations can buffer outgoing frames). What is the maximum value of N?
ajaysoni1924
asked
in
Computer Networks
Mar 15, 2019
by
ajaysoni1924
15.3k
views
computer-networks
tanenbaum
lan-technologies
mac-protocol
pure-aloha
0
votes
0
answers
15
MadeEasy Test Series: Computer Networks - Mac Protocol
Consider the network with 8 nodes running the carrier sense multiple access MAC protocol. The maximum data rate of the network is 10 Mbps. Each node sends traffic according to some unknown random process at an average rate of 1 Mbps ... a collision are ________ in % (up to 2 decimal places) [Assume no packet dropped except collied packets].
Sandy Sharma
asked
in
Computer Networks
Jan 6, 2019
by
Sandy Sharma
315
views
computer-networks
made-easy-test-series
network
mac-protocol
0
votes
2
answers
16
computer networks
A problem with __________ is that capacity is wasted because the medium will generally remain idle following the end of a transmission, even if there are one or more stations waiting to transmit. (A) 1-persistent CSMA (B) slotted ALOHA (C) p-persistent CSMA (D) nonpersistent CSMA
Smishra95
asked
in
Computer Networks
Sep 21, 2018
by
Smishra95
733
views
mac-protocol
computer-networks
0
votes
2
answers
17
Computer networks
Consider the Ethernet LAN shown below The LAN has a data transfer rate of 100Mbps and signal propagates at the speed of the 2 x 108 m/s. If system A and the system E start transmitting the frames simultaneously how many bytes of data has node A transmitted before detecting collision? Caption A. 62.5 B. 62 C. 63 D. 64
Hemant Thakur 2
asked
in
Computer Networks
Jun 23, 2018
by
Hemant Thakur 2
399
views
mac-protocol
0
votes
1
answer
18
Computer Networks 5th edition by Tanenbaum chapter 4 question 4
In an infinite-population slotted ALOHA system, the mean number of slots a station waits between a collision and a retransmission is $4$. Plot the delay versus throughput curve for this system. Please help me to find the expression only.
Abhilash Mishra
asked
in
Computer Networks
May 29, 2018
by
Abhilash Mishra
2.5k
views
computer-networks
mac-protocol
aloha
1
vote
1
answer
19
Computer Networks 5th edition by Tanenbaum chapter 4 question 4
A large population of ALOHA users manages to generate $50 \hspace{0.1cm} requests/sec$, including both originals and retransmissions. Time is slotted in units of $40 \hspace{0.1cm} msec$. What is the chance ... is the probability of exactly k collisions and then a success? What is the expected number of transmission attempts needed?
Abhilash Mishra
asked
in
Computer Networks
May 29, 2018
by
Abhilash Mishra
1.2k
views
computer-networks
mac-protocol
pure-aloha
slotted-aloha
1
vote
0
answers
20
#Collisions
akb1115
asked
in
Computer Networks
Oct 31, 2017
by
akb1115
296
views
computer-networks
mac-protocol
csma-cd
11
votes
4
answers
21
ISRO2017-32
Which media access control protocol is used by $\textsf{IEEE 802.11}$ wireless LAN? CDMA CSMA/CA ALOHA None of the above
sh!va
asked
in
Computer Networks
May 7, 2017
by
sh!va
5.1k
views
isro2017
computer-networks
mac-protocol
7
votes
3
answers
22
ISRO2011-20
The $\textsf{IEEE}$ standard for WiMax technology is $\textsf{IEEE 802.16}$ $\textsf{IEEE 802.36}$ $\textsf{IEEE 812.16}$ $\textsf{IEEE 806.16}$
go_editor
asked
in
Computer Networks
Jun 22, 2016
by
go_editor
3.2k
views
isro2011
non-gate
computer-networks
mac-protocol
5
votes
3
answers
23
ISRO2009-4
Which of the following is a MAC address? $\textsf{192.166.200.50}$ $\textsf{00056A:01A01A5CCA7FF60}$ $\textsf{568, Airport Road}$ $\textsf{01:A5:BB:A7:FF:60}$
go_editor
asked
in
Computer Networks
Jun 14, 2016
by
go_editor
4.5k
views
isro2009
computer-networks
mac-protocol
4
votes
2
answers
24
what is the throughput of channel
A broadcast channel has 10 nodes and total capacity of 10 Mbps. It uses polling for medium access. Once a node finishes transmission, there is a polling delay of 80 μs to poll the next node. Whenever a node is polled, it is allowed to ... The maximum throughput of the broadcast channel is A) 1 Mbps B) 100/11 Mbps C) 10 Mbps D) 100 Mbps please explain
indrajeet
asked
in
Computer Networks
Jun 12, 2016
by
indrajeet
3.0k
views
lan-technologies
mac-protocol
4
votes
3
answers
25
ISRO2014-71
Which of the following is not a valid multicast MAC address? $\textsf{01:00:5E:00:00:00}$ $\textsf{01:00:5E:00:00:FF}$ $\textsf{01:00:5E:00:FF:FF}$ $\textsf{01:00:5E:FF:FF:FF}$
ajit
asked
in
Computer Networks
Sep 25, 2015
by
ajit
6.6k
views
computer-networks
mac-protocol
isro2014
36
votes
4
answers
26
GATE CSE 2015 Set 2 | Question: 8
A link has transmission speed of $10^6$ bits/sec. It uses data packets of size $1000$ $\text{bytes}$ each. Assume that the acknowledgment has negligible transmission delay and that its propagation delay is the same as the data propagation delay. ... $\text{%}$. The value of the one way propagation delay (in milliseconds) is_____.
go_editor
asked
in
Computer Networks
Feb 12, 2015
by
go_editor
11.7k
views
gatecse-2015-set2
computer-networks
mac-protocol
stop-and-wait
normal
numerical-answers
57
votes
4
answers
27
GATE IT 2005 | Question: 75
In a TDM medium access control bus LAN, each station is assigned one time slot per cycle for transmission. Assume that the length of each time slot is the time to transmit $100$ $\text{bits}$ ... in the LAN so that the throughput of each station can be $2/3$ $\text{Mbps}$ is $3$ $5$ $10$ $20$
Ishrat Jahan
asked
in
Computer Networks
Nov 4, 2014
by
Ishrat Jahan
14.0k
views
gateit-2005
computer-networks
mac-protocol
normal
67
votes
6
answers
28
GATE IT 2004 | Question: 85
Consider a simplified time slotted MAC protocol, where each host always has data to send and transmits with probability $p$ = $0.2$ in every slot. There is no backoff and one frame can be transmitted in one slot. If more than one host transmits in the same slot, then ... if each host has to be provided a minimum throughput of $0.16$ frames per time slot? $1$ $2$ $3$ $4$
Ishrat Jahan
asked
in
Computer Networks
Nov 2, 2014
by
Ishrat Jahan
16.0k
views
gateit-2004
computer-networks
congestion-control
mac-protocol
normal
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