Suppose a 128-Kbps point-to-point link is set up between Earth and a rover on Mars. The distance from Earth to Mars (when they are closest together) is approx- imately 55 Gm, and data travels over the link at the speed of light-3 × 108 m/s. (a) Calculate the minimum RTT for the link. (b) Calculate the delay x bandwidth product for the link. (c) A camera on the rover takes pictures of its surroundings and sends these to Earth. How quickly after a picture is taken can it reach Mission Control on Earth? Assume that each image is 5 Mb in size.

Suppose a 128-Kbps point-to-point link is set up between Earth and a rover on Mars. The distance from Earth to Mars (when they are closest together) is approx- imately 55 Gm, and data travels over the link at the speed of light-3 × 108 m/s. (a) Calculate the minimum RTT for the link. (b) Calculate the delay x bandwidth product for the link. (c) A camera on the rover takes pictures of its surroundings and sends these to Earth. How quickly after a picture is taken can it reach Mission Control on Earth? Assume that each image is 5 Mb in size.

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter8: Data And Network Communication Technology

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Consider a satellite link with a capacity of 1 Mbps, bit error rate 10^-8 , and propagation delay of 270 msec. Assuming selective reject ARQ with a window of 64 and 10,000 bit frames, calculate the maximum link utilization
given an original bandwidth need of x, if dsss makes use of a 7 bit chip code, how large must the bandwitdh be to support DSSS? Solve it with the correct and proper explanation please...! It is important for me please need a proper and correct explanation...!
Topic :- Data link Layer A channel has a bit rate of 4 kbps and a propaga tion delay of 20 msec. For what range of frame sizes does stop-and-wait given an efficiency of at least 50 percent? Note:- Final Answer L= 5.33× 10-7 kbps Give step by step answer
Please check my answer and correct the part which is need to be foxed.And provide justification for the answer. a) The transmission time of a frame can be calculated as follows: Propagation delay (Tp) = distance/speed = 5km / 200000 km/s = 0.0025ms Transmission time (Tt) = frame size/bandwidth = 10000 * 8bits / (1Mbps * 10 ^ 6) = 0.008sec = 8ms Total time for transmission = 2 * Tp + Tt(since the frame has to travel from A to D and then D to A) = 2 * 0.0025ms + 8ms = 0.005ms + 8ms = 8.005ms The transmission time of the frame from A to D is 8.005 ms. b) The efficiency of the CSMA/CD protocol is given by the formula: Tt is the transmission time of a frame C is the number of collisions, Tp is the propagation time of a signal from one end of the segment to the other. Efficiency = Tt / (C * 2 * Tp + Tt + Tp) Assuming that there are no other stations transmitting or attempting to transmit on the segment, the transmission from A to D will succeed without collisions. Therefore,…
A planet located far from Earth is around 9 x 1010 meters away. If a stop-and-wait protocol is employed for frame transmission on a 64 Mbps point-to-point link, what is the channel utilization? Assume that the speed of light is 3 108 m/s and that the frame size is 32 KB.
Consider a full-duplex 256 Kbps satellite link with a 240 millisecond end-to-end delay. The data frames carry a useful payload of size 12,000 bits. Assume that both ACK and data frames have 320 bits of header information, and that ACK frames carry no data. What is the effective data throughput When using sliding windows with a sender window size of W = 5 data frames?
Consider a CSMA/CD with frame size is 20 KB and transmission rate is 10 Kbps, then maximum length of the cable (km) required, if signal speed is 15 km/sec.
Frames of 1000 bits are sent over a 106 bps duplex link between two hosts. The propagation time is 25 ms. Frames are to be transmitted into this link to maximally pack them in transit (within the link). 1.1 What is the minimum number of bits (1) that will be required to represent the sequence numbers distinctly? Assume that no time gap needs to be given between transmission of two frames.
Q3.Unless specified otherwise, use the free space propagation speed of light 3x108 m/s to calculate the propagation delay. For numerical calculations, the results must show the appropriate unit. Show a complete solution for each problem in your submission. Consider a digital multimedia transmission system. Separate audio and video coders are used to encode these signals. Audio and video bits are packed in packets together and transmitted over atransmission link. Each packet is 2,000 bytes long, which includes a 48-byte header. The system generates one packet every 40 ms. Calculate the following values:a. The minimum data transmission rate required to support the above system.b. The minimum signal-to-noise ratio (SNR) in dB required to transmit the above audio and video information. Assume a 400-kHz transmission channel bandwidth is used.c. The end-to-end packet delay over a 50-km link, using answer in Part a).
Unless specified otherwise, use the free space propagation speed of light 3x108 m/s to calculate the propagation delay. For numerical calculations, the results must show the appropriate unit. Show a complete solution for each problem2. Suppose network users share a 4 Mbps link. Also, suppose each user requires 200 kbps when transmitting, but each user transmits only 15% of time.a. When circuit switching is used, how many users can be supported?b. Suppose packet switching is now used and that there are 20 users. Find the probability that any given time, at most 4 users are transmitting simultaneously.
Data Communication & Computer Network Suppose that Jon's and Jenny's computers are connected by an 8 Kbps link (note, 1 Kbps = 103 bps) that uses circuit switching and that Jon sent some number of bits to Jenny over the link. Suppose that circuit switching on the link connecting Jon’s and Jenny’s computers is implemented using Time Division Multiplexing (TDM), that a frame is 1 sec in duration, and that a frame consists of 16 slots. Jon is assigned one slot in every frame. Considering that it took 12 minutes for Jon to send all bits to Jenny, find how many bits were sent by Jon to Jenny.
The distance from earth to a distant planet is approximately 9 x 10^10 m. What is the channel utilization if a stop-and-wait protocol is used for frame transmission on a 64 Mbps point-to-point link? Assume that the frame size is 32 KB and the speed of light is 3 × 10^8 m/s.