EBK COMPUTER NETWORKING
7th Edition
ISBN: 8220102955479
Author: Ross
Publisher: PEARSON
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Expert Solution & Answer
Chapter 1, Problem P31P
a.
Explanation of Solution
Given,
The length of the message is 8 × 106 bits
The transmission rate of the link is 2 Mbps
Note:
Substitute, “8 × 106” for “Length” and “2 × 106” for “Transmission rate” is given below:
The time required to send the message from source host to first packet switch is
b.
Explanation of Solution
Note:
Substitute, “1 × 104” for “Length” and “2 × 106” for “Transmission rate” is given below:
The time required to move the first packet from source host to the first switch is,
c.
Explanation of Solution
Note:
Substitute, “1 × 104” for “Length” and “2 × 106” for “Transmission rate” is given below:
The time required to move the first packet from source host to the first switch is,
d.
Explanation of Solution
Reasons to use message segmentation:
- In case of bit errors and single bit errors, the entire message must be retransmitted. Hence, message segmentation is used to eliminate retransmission...
e.
Explanation of Solution
Drawbacks of message segmentation:
- Packets present in the link must be kept in a specified sequence at the destination...
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Students have asked these similar questions
In modern packet-switched networks, including the Internet, the source host
segments long, application-layer messages (for example, an image or a music
file) into smaller packets and sends the packets into the network. The receiver
then reassembles the packets back into the original message. We refer to
this process as message segmentation. Figure 1.27 illustrates the end-to-end
transport of a message with and without message segmentation. Consider a
message that is 8. 106 bits long that is to be sent from source to destination
in Figure 1.27. Suppose each link in the figure is 2 Mbps. Ignore propagation,
queuing, and processing delays.
a. Consider sending the message from source to destination without message
segmentation. How long does it take to move the message from the source
host to the first packet switch? Keeping in mind that each switch uses
store-and-forward packet switching, what is the total time to move the
message from source host to destination host?
b. Now suppose that…
A frame containing http request is sent from Computer (A) [in whichever subnet it is now, make sure to show it in your figure], to the access point it is associated with. Draw the address fields (1, 2, and 3) of the frame travelling from Computer A to AP and the source and destination addresses of the frame travelling from AP to R1.
The MAC addresses of AP1, AP2, and AP3 are M1, M2, and M3 respectively, and the Router R1’s MAC address connected to this Switch/AP is MRA. IP address values are already given, and the port addresses could also be used as given. The Router’s MAC address facing WAN side is MRW.
(a) Suppose a server S and client C are connected over the Internet. The one-way prop-
agation delay from S to C is 50 ms. The maximum throughput between S and C is
R = 200 Mbps. A browser on client C makes an HTTP request for a webpage on server
S. The base HTML file is of size 500 KB and it references five objects, each of size
5 MB. Find the total response time for the client to receive the entire webpage using
nonpersistent HTTP with up to two parallel connections. Assume that when two par-
allel connections are active, the throughput for each connection is 40% of the maximum
throughput R.
(b) Suppose an application running on host ece.gmu.edu needs to resolve the domain name
cs.vtech.edu. Draw a diagram (with labels) showing the sequence of queries/responses
in a recursive DNS query to find the answer in a scenario where all levels of the DNS
hierarchy are involved.
Chapter 1 Solutions
EBK COMPUTER NETWORKING
Ch. 1 - What is the difference between a host and an end...Ch. 1 - The word protocol is often used to describe...Ch. 1 - Why are standards important for protocols?Ch. 1 - Prob. R4RQCh. 1 - Prob. R5RQCh. 1 - Prob. R6RQCh. 1 - Prob. R7RQCh. 1 - Prob. R8RQCh. 1 - Prob. R9RQCh. 1 - Prob. R10RQ
Ch. 1 - Prob. R11RQCh. 1 - What advantage does a circuit-switched network...Ch. 1 - Prob. R13RQCh. 1 - Prob. R14RQCh. 1 - Prob. R15RQCh. 1 - Prob. R16RQCh. 1 - Prob. R17RQCh. 1 - Prob. R18RQCh. 1 - Suppose Host A wants to send a large file to Host...Ch. 1 - Prob. R20RQCh. 1 - Prob. R21RQCh. 1 - Prob. R22RQCh. 1 - What are the five layers in the Internet protocol...Ch. 1 - Prob. R24RQCh. 1 - Prob. R25RQCh. 1 - Prob. R26RQCh. 1 - Prob. R27RQCh. 1 - Prob. R28RQCh. 1 - Equation 1.1 gives a formula for the end-to-end...Ch. 1 - Prob. P3PCh. 1 - Prob. P4PCh. 1 - Prob. P5PCh. 1 - This elementary problem begins to explore...Ch. 1 - Prob. P7PCh. 1 - Suppose users share a 3 Mbps link. Also suppose...Ch. 1 - Prob. P9PCh. 1 - Prob. P10PCh. 1 - In the above problem, suppose R1 = R2 = R3 = R and...Ch. 1 - Prob. P13PCh. 1 - Consider the queuing delay in a router buffer. Let...Ch. 1 - Prob. P15PCh. 1 - Prob. P16PCh. 1 - Prob. P17PCh. 1 - Prob. P20PCh. 1 - Prob. P21PCh. 1 - Prob. P22PCh. 1 - Prob. P23PCh. 1 - Prob. P24PCh. 1 - Prob. P25PCh. 1 - Prob. P26PCh. 1 - Prob. P27PCh. 1 - Prob. P28PCh. 1 - Prob. P29PCh. 1 - Prob. P30PCh. 1 - Prob. P31PCh. 1 - Prob. P32PCh. 1 - Prob. P33PCh. 1 - Prob. P34P
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