Q.1
A pure ALOHA network transmits 200-bit frames on a shared channel ofkbps. What is the requirement to make this frame collision-free?
  • a) 2msec
  • b) 4msec
  • c) 2sec
  • d) 4sec
Q.2
A pure ALOHA network transmits 200-bit frames on a shared channel ofkbps. What is the throughput if the system (all stations together) producesframes per second?
  • a) 150 frames
  • b) 80 frames
  • c) 135 frames
  • d) 96 frames
Q.3
A pure ALOHA network transmits 200-bit frames on a shared channel ofkbps. What is the throughput if the system (all stations together) producesframes per second?
  • a) 146 frames
  • b) 92 frames
  • c) 38 frames
  • d) 156 frames
Q.4
A pure ALOHA network transmits 200-bit frames on a shared channel ofkbps. What is the throughput if the system (all stations together) producesframes per second?
  • a) 38 frames
  • b) 48 frames
  • c) 96 frames
  • d) 126 frames
Q.5
A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) producesframes per second.
  • a) 92 frames
  • b) 368 frames
  • c) 276 frames
  • d) 151 frames
Q.6
A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200-kbps bandwidth. Find the throughput if the system (all stations together) producesframes per second.
  • a) 92 frames
  • b) 368 frames
  • c) 276 frames
  • d) 151 frames
Q.7
A network using CSMA/CD has a bandwidth ofMbps. If the maximum propagation time (including the delays in the devices and ignoring the time needed to send a jamming signal, as we see later) is 25.6 μs, what is the minimum size of the frame?
  • a) 128 bytes
  • b) 32 bytes
  • c) 16 bytes
  • d) 64 bytes
Q.8
In collision free protocol channel efficiency is given by-
  • a) d/(d + log2(N))
  • b) d*(d + log2(N))
  • c) log2(N)
  • d) (d + log2(N))
Q.9
  • a) 10
  • b) 11
  • c) 12
  • d) 14
Q.10
  • a) A-B-C-J-D-K
  • b) A-B-C-G-H-D-K
  • c) A-E-D-K
  • d) A-E-G-H-D-K
Q.11
After performing bit stuffing on the following stream :the output is-
  • a) 01101111101111101111100010
  • b) 01101111111111111110010111
  • c) 10010000000000000000001101
  • d) 01101111111111111111110010
0 h : 0 m : 1 s