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CCNA Semester 1 - Chapter 3 Review
供稿人: Alvarado
  • 1. In DNS, resource records are used by the server to resolve
A) web site names
B) web site traces
C) web site pings
D) web site proxies
  • 2. The OSI application layer entails application software and
A) packet tracing
B) services
C) neo tracing
D) wire sharking services
  • 3. The application layer protocol used to support File Transport between servers and client is
A) DNS
B) POP
C) FTP
D) TCP
  • 4. Peer-to-Peer networks are both decentralized and provide resources without a dedicated
A) supplier
B) data center
C) server
D) host service center
  • 5. What does the application layer of the OSI model allow a user to do with a data network?
A) interface with the network
B) increase network traffic
C) decrease network traffic
D) control the network
  • 6. The following are all properties of peer-to-peer applications except acting:
A) as both clients and servers
B) as either clients or servers
C) in hybrid mode providing file centralization
D) through the use of specialized software
  • 7. The OSI Application layer allows for applications on either end of a network to:
A) monitor mutual multiplexing and segmentation
B) cancel each other's requests
C) hybridize their functions
D) interface and communicate with one another
  • 8. The following are protocols that operate at the OSI application layer except:
A) POP
B) DNS
C) SMTP
D) IP
  • 9. The two email components used to forward mail between servers are MTA and:
A) IP
B) SMTP
C) POP
D) DNS
  • 10. The two protocols used to control web resource transfers from a web server to a client browser are HTTP and:
A) HTTPS
B) FTP
C) HTML
D) DNS
  • 11. In handling email, the MTA does the following except:
A) uses SMTP to route email between servers
B) receive email from the client's MUA
C) provides a resource lists with the fastest delivery times
D) passes email to the MDA for final delivery
  • 12. Telnet is usually abandoned for SSH because Telnet does not support:
A) segmentation
B) multiplexing
C) packet-tracing
D) encryption
  • 13. The HTTP protocol provides the ability of a web server and a web client to transfer:
A) data
B) packet tracing
C) user names and passwords
D) encrypting technologies
  • 14. The Telnet service provides users with the ability to remotely access another computer through what type of connection?
A) logical
B) physical
C) operational
D) virtual
  • 15. The automated service that matches web site names with their correct IP address is:
A) VOIP
B) TCP
C) HTTP
D) DNS
  • 16. Which destination port is used by an application when the HTTP protocol is activated?
A) Port 380
B) Port 280
C) Port 180
D) Port 80
  • 17. In a data network, clients can both upload data to servers and:
A) ignore data exchanges
B) initiate data exchanges
C) multiply data exchanges
D) prioritize data exchanges
  • 18. In Microsoft Networks, the application layer protocol used to describe the services provided is:
A) SMB
B) SMTP
C) VOIP
D) POP
  • 19. There are 2 important advantages of using a client-server network model, centralized administration and better:
A) data exchange
B) pricing
C) performance
D) security
  • 20. Why is security a serious concern in a peer-to-peer network:
A) difficult to enforce
B) difficult to ignore
C) difficult to purchase
D) difficult to consider
  • 21. In a peer-to-peer network, a client that responds to a file sharing request will then become a/an:
A) server device
B) intermediary device
C) user device
D) end device
  • 22. A server's application layer usually processes multiple request for services by using support from lower layer functions to distinguish between:
A) packets
B) accounts
C) connections
D) users
  • 23. The following are examples of Peer-to-Peer networks except:
A) Bit Torrent
B) Bear Share
C) Microsoft Office
D) Limewire
  • 24. The main reason why a network administrator should block common ports used in file sharing is to avoid:
A) intense wireless transmissions
B) user complaints
C) VOIP concerns
D) illegal fire sharing
  • 25. A Peer-to-Peer network can work in a centralized and decentralized manner, this means they can work in what type of mode?
A) wire-sharked
B) packet-traced
C) neo-traced
D) hybrid
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