Which of the following is a true statement about the use of public key encryption in transmitting messages? A Public key encryption enables parties to initiate secure communications through an open medium, such as the Internet, in which there might be eavesdropp B Public key encryption is not considered a secure method of communication because a public key can be intercepted. Public key encryption only allows the encryption of documents containing text; documents containing audio and video must use a different encryption meth D Public key encryption uses a single key that should be kept secure because it is used for both encryption and decryption.

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Which of the following is a true statement about the use of public key encryption in transmitting messages?
A
Public key encryption enables parties to initiate secure communications through an open medium, such as the Internet, in which there might be eavesdroppers.
B
Public key encryption is not considered a secure method of communication because a public key can be intercepted.
Public key encryption only allows the encryption of documents containing text; documents containing audio and video must use a different encryption method.
Public key encryption uses a single key that should be kept secure because it is used for both encryption and decryption.
Transcribed Image Text:Which of the following is a true statement about the use of public key encryption in transmitting messages? A Public key encryption enables parties to initiate secure communications through an open medium, such as the Internet, in which there might be eavesdroppers. B Public key encryption is not considered a secure method of communication because a public key can be intercepted. Public key encryption only allows the encryption of documents containing text; documents containing audio and video must use a different encryption method. Public key encryption uses a single key that should be kept secure because it is used for both encryption and decryption.
A company delivers packages by truck and would like to minimize the length of the route that each driver must travel in order to reach n delivery locations. The company is considering two different algorithms
for determining delivery routes.
Algorithm I Generate all possible routes, compute their lengths, and then select the shortest possible route. This algorithm does not run in reasonable time.
Algorithm II Starting from an arbitrary delivery location, find the nearest unvisited delivery location, Continue creating the route by selecting the nearest unvisited location until all locations have been
visited. This algorithm does not guarantee the shortest possible route and runs in time proportional to n2,
Which of the following best categorizes algorithm II?
A
Algorithm II attempts to use an algorithmic approach to solve an otherwise undecidable problem.
B
Algorithm Il uses a heuristic approach to provide an approximate solution in reasonable time.
C
Algorithm Il provides no improvement over algorithm I because neither algorithm runs in reasonable time.
D
Algorithm Il requires a much faster computer in order to provide any improvement over algorithm I.
Transcribed Image Text:A company delivers packages by truck and would like to minimize the length of the route that each driver must travel in order to reach n delivery locations. The company is considering two different algorithms for determining delivery routes. Algorithm I Generate all possible routes, compute their lengths, and then select the shortest possible route. This algorithm does not run in reasonable time. Algorithm II Starting from an arbitrary delivery location, find the nearest unvisited delivery location, Continue creating the route by selecting the nearest unvisited location until all locations have been visited. This algorithm does not guarantee the shortest possible route and runs in time proportional to n2, Which of the following best categorizes algorithm II? A Algorithm II attempts to use an algorithmic approach to solve an otherwise undecidable problem. B Algorithm Il uses a heuristic approach to provide an approximate solution in reasonable time. C Algorithm Il provides no improvement over algorithm I because neither algorithm runs in reasonable time. D Algorithm Il requires a much faster computer in order to provide any improvement over algorithm I.
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