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

Chapter 1 Introduction

1.

A local area network (LAN) is defined by _______________. A) the geometric size of the network

B) the maximum number of hosts in the network

C) the maximum number hosts in the network and/or the geometric size of the network D) the topology of the network 2.

The largest geographic area a wide area network (WAN) can span is A) a town B) a state C) a country D) the world 3.

The TCP/IP protocol suite consists of _______ layers. A) two B) three C) five D) six

4.

A router is involved in ____________ layers of the TCP/IP protocol suite. A) two B) three C) four D) five 5.

A link-layer switch is involved in ______________ layers of the TCP/IP protocol suite. A) two B) three C) four D) five

6.

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 called A) a message B) a datagram

C) a segment or a user datagram D) a frame 10.

In the TCP/IP protocol suite, the ______ layer is responsible for moving frames from one hop (node) to the next. A) physical B) data link C) transport D) network

11.

In the TCP/IP protocol suite, the physical layer is concerned with the movement of _______ over the physical medium. A) programs B) dialogs C) protocols D) bits

12.

In the TCP/IP protocol suite, a port number is the identifier at the ____________. A) application layer B) transport layer C) network layer D) physical layer

13.

In the TCP/IP protocol suite, a logical address is the identifier at the _______________. A) network layer B) transport layer C) data-link layer D) application layer

14.

The _________ layer is responsible for the delivery of a message from one process to another. A) physical B) transport C) network

D) application

15.

The Internet Protocol (IP) is ________ protocol. A) a reliable

B) a connection-oriented

C) a reliable and connection-oriented D) an unreliable

16.

The application layer in the TCP/IP protocol suite is usually considered to be the combination of ________ layers in the OSI model

A) application, presentation, and session B) application, transport, and network C) application, data-link, and physical D) network, data-link, and physical

17.

A proposed standard is elevated to ________ standard status after at least two successful tries. A) informational B) historic C) draft

D) None of the choices are correct 18.

An RFC is labeled ________ if it must be implemented by all Internet systems. A) required B) elective

C) recommended

D) None of the choices are correct 19.

In the original ARPANET, _______ were directly connected to each other. A) interface message processors (IMPs). B) host computers C) networks D) routers

20.

_______ was formed to connect universities with no defense ties. A) ARPANET B) CSNET C) NSFNET D) ANSNET

21.

Currently _______ is responsible for the management of Internet domain names and addresses A) NIC B) ICANN C) ISOC

D) IEFE

22.

In TCP/IP, a message at the application layer is encapsulated in a packet at the ________ layer. A) network B) transport C) data link D) physical

23.

In TCP/IP, a message at the transport layer is encapsulated in a packet at the ________ layer. A) network B) transport C) data link D) physical

24.

In TCP/IP, a message belonging to the network layer is decapsulated from a packet at the ________ layer.

A) network B) transport C) data link D) physical

25.

In TCP/IP, a message belonging to the transport layer is decapsulated from a packet at the ________ layer.

A) network B) transport C) data link D) physical 26.

In TCP/IP, a logical connection between an entity at the network layer can be made with another entity at the ________ layer. A) network B) transport C) data link D) physical

27.

In TCP/IP, a logical connection between an entity at the data-link layer can be made with another entity at the ________ layer. A) network B) transport C) data link D) physical

28.

In TCP/IP, a packet at the third layer carries data belonging to the ________ layer and the header

belonging to the _________ layer. A) third; third B) third; fourth C) fourth; third D) fourth; fourth

ADCBA CDCCB DBABD ACAAB BBACB ACC