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Recent questions tagged ethernet

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62
CSMA/CD
What is contention window for CSMA/CD? What is it's difference with persistence method?
What is contention window for CSMA/CD? What is it's difference with persistence method?
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1 votes
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66
Self doubt on Ethernet LAN
Are the below formulas for correct w.r.t ethernet LAN? efficiency : PD = propagation delay TD = transmission delay L = frame size $\eta =\frac{1}{1 + 6.44(\frac{ pd }{ td })}$ throughput: $= \frac{L}{RTT}$ If they are wrong please provide correct ones.
Are the below formulas for correct w.r.t ethernet LAN?efficiency :PD = propagation delayTD = transmission delayL = frame size$\eta =\frac{1}{1 + 6.44(\frac{ pd }{ td })}$...
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67
UGC NET CSE | November 2017 | Part 2 | Question: 28
The number of bits used for addressing in Gigabit Ethernet is __________. $32$ bits $48$ bits $64$ bits $128$ bits
The number of bits used for addressing in Gigabit Ethernet is __________.$32$ bits$48$ bits$64$ bits$128$ bits
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70
Ethernet
Suppose that N ethernet stations, all trying to send at the same time, require N/2 slot times to sort out who transmits next. Assuming the average packet size is 5 slot times, express the utilization of ethernet as a function of N a. 5/(N+10) b. 10/(10+N) c 10/N d. 10/(5+N)
Suppose that N ethernet stations, all trying to send at the same time, require N/2 slot times to sort out who transmits next. Assuming the average packet size is 5 slot t...
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72
ISRO2017-33
An Ethernet frame that is less than the $\textsf{IEEE 802.3}$ minimum length of $64$ octets is called Short frame Small frame Mini frame Runt frame
An Ethernet frame that is less than the $\textsf{IEEE 802.3}$ minimum length of $64$ octets is calledShort frameSmall frameMini frameRunt frame
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73
ethernet
if an ethernet station collide 4 times to try to transmit a single frame .How long might it wait to be before the next attempt if time slot 51.2 micro sec ...................micro sec. a. 768 b. 819.2 c.409.6 d. none
if an ethernet station collide 4 times to try to transmit a single frame .How long might it wait to be before the next attempt if time slot 51.2 micro sec ..................
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74
Ethernet
IF the propagation delay csma/cd network is 750 bit times then what is the slot if the jamming signal is 50 bits?
IF the propagation delay csma/cd network is 750 bit times then what is the slot if the jamming signal is 50 bits?
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75
CSMA/CD
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1 votes
1 answer
77
Ethernet
In standard ethernet with transmission rate of 20 Mbps, the length of the cable is 2500 m and the size of a frame is 1024 bits. The propagation speed of a signal in a cable is $2 \times 10^8$ m/s. The percentage of the time medium is occupied but not used by a station is?
In standard ethernet with transmission rate of 20 Mbps, the length of the cable is 2500 m and the size of a frame is 1024 bits. The propagation speed of a signal in a cab...
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78
Ethernet
according to standards of ethernet minimum data size in LAN is 64bytes in some question by solving L=2Tp*B, i got L value as 60bytes. now answer for this question shud be 60bytes according to the answer or 64 bytes according to standards?
according to standards of ethernet minimum data size in LAN is 64bytesin some question by solving L=2Tp*B, i got L value as 60bytes.now answer for this question shud be 6...
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81
slot time and roundtrip time
What is different between slot time and round trip time? To calculate the min frame length in ethernet we use RTT then what is the significance of slot time.
What is different between slot time and round trip time?To calculate the min frame length in ethernet we use RTT then what is the significance of slot time.
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83
MAC address
The address $\large\color{maroon}{\text{43:7B:6C:DE:10:00}}$ has been shown as the source address in an Ethernet frame. What will be the receiver does when it receives the frame ?
The address $\large\color{maroon}{\text{43:7B:6C:DE:10:00}}$ has been shown as the source address in an Ethernet frame. What will be the receiver does when it receives th...
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2 votes
4 answers
84
csma/cd
A network with CSMA/CD protocol in the MAC layer is running at 1 Gbps over a 1 km cable with no repeaters. The signal speed in the cable is 2 x 108 m/sec. The frame size for this network 10000 bits what is the total time requires to send this frame completly ?
A network with CSMA/CD protocol in the MAC layer is running at 1 Gbps over a 1 km cable with no repeaters. The signal speed in the cable is 2 x 108 m/sec. The frame size...
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3 votes
2 answers
85
Ethernet
What is the maximum theoretical percent utilization in a 802.3 LAN (that uses 10 base 5 cable) with 128 stations connected to five 500 meter segments. The data rate is 10 Mbps. Assume the frame size is 256 bytes and standard slot time is 51.2 μsec. (A) 70% (B) 90% (C) 80% (D) 60%
What is the maximum theoretical percent utilization in a 802.3 LAN (that uses 10 base 5 cable) with 128 stations connected to five 500 meter segments. The data rate is 10...
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86
MadeEasy Test Series: Computer Networks - Ethernet
For gigabit ethernet, the length of the cable, if length of the cable in standard ethernet l (2000) to maintain same frame size is _______.
For gigabit ethernet, the length of the cable, if length of the cable in standardethernet l (2000) to maintain same frame size is _______.
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88
MadeEasy Test Series: Computer Networks - Ethernet
Please explain question first ::: For gigabit ethernet, the length of the cable, if length of the cable in standard ethernet l (2000) to maintain same frame size is _______.
Please explain question first :::For gigabit ethernet, the length of the cable, if length of the cable in standard ethernet l (2000) to maintain same frame size is ______...
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89
network
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