Computer-network-simple-questions-programming-homework-help
Computer-network-simple-questions-programming-homework-help
1.For the Internet, the top of the naming hierarchy is managed by an organization called __________.
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A. |
Top Naming Hierarchy for Assigned Names and Numbers |
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B. |
Internet Hierachy for AssignedNames and Numbers |
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C. |
Top Hierachy for AssignedNames and Numbers |
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D. |
Internet Corporation for Assigned Names and Numbers |
QUESTION 2
1.Within the Internet, email is delivered by having the sending computer establish a TCP connection to port 25 of the receiving computer. Listening to this port is a mail server that speaks __________________.
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A. |
Internet Mail Protocol |
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B. |
Email Transfer Protocol |
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C. |
Simple Mail Transfer Protocol |
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D. |
Mail Transfer Protocol |
QUESTION 3
1. The “http://csit.udc.edu/index.html” URL consists of three parts. What is the host name of this URL?
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A. |
http |
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B. |
csit |
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C. |
csit.udc.edu |
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D. |
udc.edu |
QUESTION 4
1.To tackle the problem of serving a single request at a time, one strategy is to make the server ______________. In one design, the server consists of a front-end module that accepts all incoming requests and k processing modules.
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A. |
Multiprocess |
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B. |
Multithreaded |
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C. |
Multiserver |
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D. |
Multimodule |
QUESTION 5
1. HTTP 1.1 supports persistent connections. With them, it is possible to establish a TCP connection, send a request and get a response, and then send additional requests and get additional responses. What is this strategy called?
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A. |
TCP Reuse |
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B. |
Persistent Establish |
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C. |
Connection Reuse |
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D. |
Connection Re-establish |
QUESTION 6
1.What is NOT a difficulty for mobile phones browsing the web?
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A. |
Relatively small screens |
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B. |
Network bandwidth is limited |
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C. |
Connectivity may be intermittent. |
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D. |
Javascript is not supported. |
QUESTION 7
1. Compelling Web applications need responsive user interfaces and seamless access to data stored on remote Web servers. Scripting on the client (e.g., with JavaScript) and the server (e.g., with PHP) are basic technologies that provide pieces of the solution. These technologies are commonly used with several other key technologies in a combination called ______________.
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A. |
Dynamic Javascript and Xml |
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B. |
Seamless Javascript and Xml |
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C. |
Asynchronous Javascript and Xml |
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D. |
Synchronous Javascrpt and Xml |
QUESTION 8
1.Every domain, whether it is a single host or a top-level domain, can have a set of resource records associated with it. These records are the DNS database. A resource record contains a five-tuple. Although they are encoded in binary for efficiency, in most expositions resource records are presented as ASCII text, one line per resource record. Write the format of the five-tuple.
QUESTION 9
1. What are two kinds of subsystems in email systems?
QUESTION 10
1.When a user clicks on a hyperlink in a webpage, the browser carries out a series of steps in order to fetch the page pointed to. List the steps.
