选择题题库07.txt

卡耐基SSD8选择题答案TXT版 相信对大家有好处

  (a) Bit Error Rate
 (b) Throughput
 (c) Roundtrip time
 (d) Percentage of packets retransmitted  

 Correct answer is  (c)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.4 of the course notes.  
 

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 7. 
 Ethernet (IEEE 802.3) is an example of 
 

  (a) a successful example of the Internet's strategy of developing standards through "rough consensus and running code"
 (b) a standard developed by the International Telecommunications Union
 (c) an a priori standard
 (d) a de facto standard later developed into a de jure standard  

 Correct answer is  (d)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.6 of the course notes.  
 

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 8. 
 John is using his bank's Web server to pay his telephone bill electronically. Which kind(s) of network interaction take(s) place in this Scenario, from the moment John logs into his bank's Web site until the telephone company receives the money? 
People-people 
People-computer 
Computer-computer 
 
 

  (a) II and III only
 (b) II only
 (c) III only
 (d) I, II, and III  

 Correct answer is  (a)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1 of the course notes.  
 

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 9. 
 The Internet received its name in the 1980s because 
 

  (a) it was meant to be a network internal to the United States Department of Defense
 (b) it consisted of many interconnected networks
 (c) it was an interim (temporary) design of what it later became, but the name stuck
 (d) it achieved international scope with the addition of the City University of London  

 Correct answer is  (b)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.6 of the course notes.  
 

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 10. 
 Which of the following distinguish stream sockets (e.g., TCP) from datagram sockets (e.g., UDP)? 
Stream sockets guarantee delivery of the data sent through them. 
Stream sockets can be used to send application data to a remote host, whereas datagram sockets can only send control commands. 
Stream sockets have greater overhead. 
 
 

  (a) II and III only
 (b) I and III only
 (c) I only
 (d) I and II only  

 Correct answer is  (b)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.1 of the course notes.  
 
 1. 
 Every Protocol Data Unit (PDU) that is sent by a protocol layer to its remote peer on the destination system always includes: 
The headers for all the protocols of the layers above it 
The headers for the protocol of the layer below it 
Application Data 
 
 

  (a) I and III only
 (b) None
 (c) I, II, and III
 (d) III only  

 Correct answer is  (b)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.5 of the course notes.  
 



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 2. 
 Which of the following pairs of entities name a client and one of its servers? 
Google search engine/www.example.com 
Web browser/Google search engine 
Email client/Web browser 
 
 

  (a) I, II, and III
 (b) II only
 (c) I and II only
 (d) II and III only  

 Correct answer is  (c)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.1 of the course notes.
   (b) The search engine also has to search other servers.  
 

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 3. 
 Which of the following are specified by the HTTP protocol? 
The syntax of the request header 
The syntax of the response header 
The specific legal names of the request header fields 
 
 

  (a) I and II only
 (b) I, II, and III
 (c) I and III only
 (d) I only  

 Correct answer is  (a)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.1 of the course notes.
   (a) All header field names are valid; it is up to the client and the server to understand each other's field names, or to ignore them.  
 

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 4. 
 The transmission of high-quality, interactive voice and video over the current Internet is difficult because today's Internet 
 

  (a) does not really have sufficient throughput
 (b) gives higher priority to bulk data transfers
 (c) is unable to guarantee minimum throughput or maximum latency for a given connection
 (d) uses connectionless protocols  

 Correct answer is  (c)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.4 of the course notes.  
 

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 5. 
 What can be said about the protocol used by the implementation of the transport layer of an Internet host? 
It guarantees delivery. 
It is the Transmission Control Protocol (TCP). 
It uses services provided by the session layer. 
 
 

  (a) I and II only
 (b) I and III only
 (c) none
 (d) I only  

 Correct answer is  (c)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.5 of the course notes.  
 

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 6. 
 In contrast to standards developed by traditional standards organizations like the International Telecommunications Union (ITU) or the International Standards Organization (ISO), standards developed by the Internet Engineering Task Force (IETF) can be 
 

  (a) extensively critiqued and modified by individuals, without requiring them to have special membership status
 (b) applied before they have been embodied in working implementations, in order not to delay progress
 (c) modified arbitrarily by the Advance Research projects Agency (ARPA) of the United States Department of Defense, which originally developed the Internet
 (d) developed in secret by the members of the IETF until the standards mature sufficiently to withstand public criticism  

 Correct answer is  (a)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.6 of the course notes.  
 

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 7. 
 John is using his bank's Web server to pay his telephone bill electronically. Which kind(s) of network interaction take(s) place in this Scenario, from the moment John logs into his bank's Web site until the telephone company receives the money? 
People-people 
People-computer 
Computer-computer 
 
 

  (a) II and III only
 (b) I, II, and III
 (c) III only
 (d) II only  

 Correct answer is  (a)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1 of the course notes.  
 

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 8. 
 Which of the following methods are invoked by a client implemented with sockets? 
connect( ) 
listen( ) 
read( ) 
 
 

  (a) I and III only
 (b) I, II, and III
 (c) III only
 (d) I only  

 Correct answer is  (a)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.1 of the course notes.  
 

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 9. 
 You have recently become the first network engineer of a large corporation with offices worldwide. The company is considering the installation of a data network, but the Board of Directors is rather old-fashioned and does not see the need to change the company's time-honored business practices. Your first task at the job is to justify your salary and the cost of a new network, and for this purpose you are about to give a presentation to the Board of Directors. Which of the following would you include in your presentation? Assume the directors are extremely intelligent, though perhaps not knowledgeable in your field. 
Lower expenditures on computer hardware 
Higher availability of customer services 
Better protection of the company's proprietary information 
 
 

  (a) I and II only
 (b) II only
 (c) II and III
 (d) I and III only  

 Correct answer is  (a)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1 of the course notes.
   (c) A network saves money through resource sharing and by lowering the number of servers required.  
 

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 10. 
 Packet collisions occur in an Ethernet network because 
 

  (a) the Ethernet switching mechanism may occasionally send two packets through the same route
 (b) two different Ethernet networks may be spliced together
 (c) the Ethernet uses a ring topology
 (d) two Ethernet nodes can send packets at the same time  

 Correct answer is  (d)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.2 of the course notes.  

View Assessment Result: Multiple-Choice Quiz 1



 

 Your performance was as follows:  

 1. 
 Every Protocol Data Unit (PDU) that is sent by a protocol layer to its remote peer on the destination system always includes: 
The headers for all the protocols of the layers above it 
The headers for the protocol of the layer below it 
Application Data 
 
 

  (a) I, II, and III
 (b) I and III only
 (c) None
 (d) III only  

 Correct answer is  (c)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.5 of the course notes.  
 

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 2. 
 Which of the following parameters can be specified in the header of a request in the Hypertext Transfer Protocol (HTTP)? 
The types of image formats that a browser understands 
The type of browser (e.g., Netscape, Internet Explorer) making the request 
The method by which the request is to be satisfied—for example, whether the request is a GET of a form submission 
 
 

  (a) I, II, and III
 (b) II and III only
 (c) III only
 (d) I and II only  

 Correct answer is  (a)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.1 of the course notes.  
 

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 3. 
 Two packets A and B are sent in that order through a connectionless communication network. They will arrive at the destination 
 

  (a) in the order A-B, after possibly having traversed different routes
 (b) in any order, after having traversed the same route
 (c) in any order, after possibly having traversed different routes
 (d) in the order A-B, after having traversed the same route  

 Correct answer is  (c)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.2 of the course notes.  
 

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 4. 
 What can be said concerning the protocol that is used by the implementation of the network layer of an Internet host? 
It guarantees delivery. 
It is the Internet Protocol (IP). 
It uses services provided by the session layer. 
 
 

  (a) none
 (b) II only
 (c) I only
 (d) I and II only  

 Correct answer is  (b)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.5 of the course notes.  
 

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 5. 
 A computer sends 100 Kbytes of aggregate data to another computer through the network. If this transmission time takes 10 seconds and setup time is negligible, the throughput of this network is 
 

  (a) exactly 10 Kbps
 (b) in the range from 60 to 120 Kbps (kilobits per second)
 (c) in the range from 6 to 12 Kbps (kilobits per second)
 (d) not able to be determined with the information given  

 Correct answer is  (b)  

 Your score on this question is: 0.00  

 Feedback: 
   See section 1.1.4 of the course notes.  
 

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 6. 
 An advantage of defining network protocols through agreement among many companies and individuals is that 
 

  (a) otherwise source code would need to be shipped with all networking applications
 (b) a protocol designed by committee always has better performance than that designed by a single company or research project
 (c) only one implementation need then be created
 (d) different implementations can then communicate with each other  

 Correct answer is  (d)  

 Your score on this question is: 10.00  

 Feedback: 
   See section 1.1.1 of the course notes.  
 

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 7. 
 Which of the following activities use an inter-network? 
A phone call from Pittsburgh in the United States to Chennai in India 
A phone call from a wired phone to a mobile ("cell") phone 
A chat session between two computers connected to an office Ethernet 
 
 

  (a) I only
 (b) I, II, and III
 (c) III only
 (d) I and II only