2009年思科网院杯在线比赛平台样题

Sample Test

Question 1

分数 : 1

What are two characteristics of Ethernet 802.3? (Choose two.)

选择至少一个答案       

a. also referred to as thick Ethernet     

        b. specifies the MAC portion of the data link layer (Layer 2)         

        c. developed in the mid-1970s       

        d. specifies the physical layer (Layer 1)          

        e. based on the CSMA/CD process        

        f. a standard that has been replaced by Ethernet II      

 

Question 2

分数 : 1

What is all of the network devices connect directly to each other in a linear fashion?

选择一个答案       

a. Partial-mesh      

        b. Mesh

        c. Ring    

        d. Dual-ring    

        e. Star    

        f. Bus      

 

Question 3

分数 : 1

What defines how data is formatted for transmission and how access to the network is controlled?

选择一个答案       

a. Datalink     

        b. Network     

        c. Transport   

        d. Application         

        e. Session       

        f. Presentation       

        g. Physical      

 

Question 4

分数 : 1

Acknowledgment and windowing are two forms of _____.

选择一个答案       

a. reliable connections  

        b. flow control        

        c. TCP sequencing

        d. TCP connection

 

Question 5

分数 : 1

TCP is best for which two of the following applications? (Choose two.)

选择至少一个答案       

a. E-mail         

        b. voice streaming          

        c. downloading       

        d. video streaming         

 

Question 6

分数 : 1

Windowing provides which of the following services?

选择一个答案  

         a. The receiver can multiplex         

        b. The sender can multiplex  

        c. The receiver can have outstanding acknowledgments.    

        d. The sender can transmit a specified number of unacknowledged segments.

 

Question 7

分数 : 1

What indicates the structure of the network?

选择一个答案  

         a. Security      

        b. Speed          

        c. Topology     

        d. Cost   

        e. Scalability  

        f. Reliability    

        g. Availability

 

Question 8

分数 : 1

What provides routing of data from the source to a destination by defining the packet and addressing scheme, moving data between the data link and transport layers, routing packets of data to remote hosts, and performing fragmentation and reassembly of data packets?

选择一个答案  

         a. Physical layer     

        b. Datalink layer    

        c. Application layer         

        d. Transport layer  

        e. Internet layer    

 

Question 9

分数 : 1

Which two statements about the purpose of the OSI model are accurate? (Choose two.)

选择至少一个答案  

         a. The OSI model defines the network functions that occur at each layer.  

        b. The OSI model facilitates an understanding of how information travels throughout a network.     

        c. The OSI model ensures reliable data delivery through its layered approach.   

        d. The OSI model allows changes in one layer to affect the other layers.    

 

Question 10

分数 : 1

How many bits are in an IPv4 address?

选择一个答案  

        a. 48       

        b. 16       

        c. 32       

        d. 128     

        e. 64