计算机网络教程自顶向下方法选择题及答案 Chapt 1 Introduction-QUIZZ.docx

Chapter 1 Introduction1.A local area network (LAN) is defined by _.A)the geometric size of the networkB)the maximum number of hosts in the networkC)the maximum number hosts in the network and/or the geometric size of the networkD)the topology of the network2.The largest geographic area a wide area network (WAN) can span isA)a townB)a stateC)a countryD)the world3.The TCP/IP protocol suite consists of _ layers.A)twoB)threeC)fiveD)six4.A router is involved in _ layers of the TCP/IP protocol suite.A)twoB)threeC)fourD)five5.A link-layer switch is involved in _ layers of the TCP/IP protocol suite.A)twoB)threeC)fourD)five6.In the TCP/IP protocol suite, which of the following is an application layer protocol?A)The User Datagram Protocol (UDP)B)The Internet Protocol (IP)C)The File Transfer Protocol (FTP)D)the Transmission Control Protocol (TCP)7.In the TCP/IP protocol suite, which of the following is a transport layer protocol?A)The Internet Control Message protocol (ICMP)B)The Internet Protocol (IP)C)The Address Resolution Protocol (ARP)D)The Transmission Control Protocol (TCP)8.In the TCP/IP protocol suite, which of the following is a network layer protocol?A)The Stream Control Transmission Protocol (SCTP)B)The Secure Shell (SSH)C)The Internet Protocol (IP)D)User Datagram Protocol (UDP)9.The transport-layer packet in the TCP/IP protocol suite is calledA)a messageB)a datagramC)a segment or a user datagramD)a frame10.In the TCP/IP protocol suite, the _ layer is responsible for moving frames from one hop (node) to the next.A)physicalB)data linkC)transportD)network11.In the TCP/IP protocol suite, the physical layer is concerned with the movement of _ over the physical medium.A)programsB)dialogsC)protocolsD)bits12.In the TCP/IP protocol suite, a port number is the identifier at the _.A)application layerB)transport layerC)network layerD)physical layer13.In the TCP/IP protocol suite, a logical address is the identifier at the _.A)network layerB)transport layerC)data-link layerD)application layer14.The _ layer is responsible for the delivery of a message from one process to another.A)physicalB)transportC)networkD)application15.The Internet Protocol (IP) is _ protocol.A)a reliableB)a connection-orientedC)a reliable and connection-orientedD)an unreliable16.The application layer in the TCP/IP protocol suite is usually considered to be the combination of _ layers in the OSI modelA)application, presentation, and sessionB)application, transport, and networkC)application, data-link, and physicalD)network, data-link, and physical17.A proposed standard is elevated to _ standard status after at least two successful tries.A)informationalB)historicC)draftD)None of the choices are correct18.An RFC is labeled _ if it must be implemented by all Internet systems.A)requiredB)electiveC)recommendedD)None of the choices are correct19.In the original ARPANET, _ were directly connected to each other.A)interface message processors (IMPs).B)host computersC)networksD)routers20._ was formed to connect universities with no defense ties.A)ARPANETB)CSNETC)NSFNETD)ANSNET21.Currently _ is responsible for the management of Internet domain names and addressesA)NICB)ICANNC)ISOCD)IEFE22.In TCP/IP, a message at the application layer is encapsulated in a packet at the _ layer.A)networkB)transportC)data linkD)physical23.In TCP/IP, a message at the transport layer is encapsulated in a packet at the _ layer.A)networkB)transportC)data linkD)physical24.In TCP/IP, a message belonging to the network layer is decapsulated from a packet at the _ layer.A)networkB)transportC)data linkD)physical25.In TCP/IP, a message belonging to the transport layer is decapsulated from a packet at the _ layer.A)networkB)transportC)data linkD)physical26.In TCP/IP, a logical connection between an entity at the network layer can be made with another entity at the _ layer.A)networkB)transportC)data linkD)physical27.In TCP/IP, a logical connection between an entity at the data-link layer can be made with another entity at the _ layer.A)networkB)transportC)data linkD)physica