Pretend that a client can retrieve a file from a remote server at a known address using UDP. The client first sends a file name request, and the server responds with a series of data packets containing various file components. Client and server utilize a stop-and-wait protocol to assure delivery dependability. Does this protocol have a problem besides obvious performance issues? Consider the potential of process failure?

Pretend that a client can retrieve a file from a remote server at a known address using UDP. The client first sends a file name request, and the server responds with a series of data packets containing various file components. Client and server utilize a stop-and-wait protocol to assure delivery dependability. Does this protocol have a problem besides obvious performance issues? Consider the potential of process failure?

Principles of Information Security (MindTap Course List)

6th Edition

ISBN:9781337102063

Author:Michael E. Whitman, Herbert J. Mattord

Publisher:Michael E. Whitman, Herbert J. Mattord

Chapter6: Security Technology: Access Controls, Firewalls, And Vpns

Section: Chapter Questions

Problem 2RQ

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Assume that a client can use UDP to obtain a file from a distant server at a known address. The client initiates the request for a file name, and the server responds with a sequence of data packets containing various file components. To ensure delivery reliability, the client and server use a stop-and-wait protocol. Is there anything else wrong with this protocol aside apparent performance issues? Consider the possibility of process failure.
True or false? Suppose Host A is sending Host B a large file over a TCP connection. The number of unacknowledged bytes that A sends cannot exceed the size of the receive buffer.
Suppose that a Web server runs in Host C on port 80. Suppose this Web server uses persistent connections, and is currently receiving requests from two different Hosts, A and B. Are all of the requests being sent through the same socket at Host C? If they are being passed through different sockets, do both of the sockets have port 80? Discuss and explain.
Let's say that Host C is running a Web server that listens on port 80. Suppose that this web server is able to maintain persistent connections and responds to requests from both Host A and Host B. Is Host C sending all of the requests over the same connection, or are there many sockets in use? Do each of them have port 80 even though they are broadcast over separate sockets? It's something you need to discuss and provide some clarification on.
Multiple packets may be sent between two hosts over a single connection. Could you please break down the timings for processing cargo? Is it to be anticipated that one delay would continue for a certain length of time while the other delay could be modified?
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A connection between two servers may transport multiple packets simultaneously. Please break down for me how much time is consumed on each phase of goods processing. Should the duration of one delay be predetermined, while the duration of the other delay is situation-dependent?
In IEEE 802.11, two-way communication is used to authenticate an open system. In order to authenticate the client, the server must give the station ID (typically the MAC address). Response to the client's previous request is either a successful or failed authentication response from the access point/router. An error may arise if, for example, an AP/router configuration does not include the client's MAC address.In what ways is it advantageous to use this kind of authentication scheme?In what ways does this authentication technique have security vulnerabilities that might be mitigated?
QUESTION 19 Suppose a process in Host C has a UDP socket with port number 4320. Suppose both Host A and Host B each send a UDP segment to Host C with destination port number 4320. Then both of these segments will be directed to the same socket with port number 4320 at Host C True False QUESTION 20 With TCP’s flow control mechanism, where the receiver tells the sender how much free buffer space it has (and the sender always limits the amount of outstanding, unACKed, in-flight data to less than this amount), it is not possible for the sender to send more data than the receiver has room to buffer. True False