?/p>
?/p>
?/p>
?/p>
?/p>
?/p>
?/p>
?/p>
?/p>
题(
A
?/p>
闭卷
?/p>
2008
—?/p>
2009
学年?/p>
2
学期?/p>
课程号:
30306230
课序号:
0
?/p>
7
课程名称:计算机网络与通信
任课教师?/p>
成绩?/p>
适用专业年级?/p>
05
学生人数?/p>
印题份数?/p>
学号?/p>
姓名?/p>
?/p>
?/p>
?/p>
?/p>
四川大学学生参加由学校组织或由学校承办的各级各类考试,必须严格执行《四川大学考试工作
管理办法》和《四川大学考场规则?/p>
。有考试违纪作弊行为的,一律按照《四川大学学生考试违纪?/p>
弊处罚条例》进行处理?/p>
四川大学各级各类考试的监考人员,必须严格执行《四川大学考试工作管理办法?/p>
?/p>
《四川大学?/p>
场规则》和《四川大学监考人员职责?/p>
。有违反学校有关规定的,严格按照《四川大学教学事故认?/p>
及处理办法》进行处理?/p>
第一?/p>
第二?/p>
第三?/p>
第四?/p>
第五?/p>
总分
一、英译汉?/p>
10
分)
1.
ADSL
非对称数字用户线?/p>
2. Packet switching
分组交换
3.
PPP
点到?/p>
4.
DHCP
动态主机配置协?/p>
5.
PDU
协议数据单元
6. MIME
用途互联网邮件扩展
7.
IMAP
Internet
消息访问协议
8. NAT
网络地址转换
9. ICMP
Internet
控制信息协议
10. ARP
地址解析协议
二?/p>
单项选择?/p>
(每小题
l. 5
分,?/p>
30
?/p>
)
1
?/p>
A
is a Circuit-switched network.
A. TDM
B. Datagram network
C. Internet
D. virtual circuit network
2
?/p>
The store-and-forward delay is
D
A. processing delay
B. queuing delay
C. propagation delay
D. transmission delay
3
?/p>
Which is not the function of connection-oriented service?
C
A. flow control
B. congestion control
C. error correction
D. reliable data transfer
4
?/p>
The IP protocol lies in
C
A. application layer
B. transport layer
C. network layer
D. link layer
5
?/p>
Which of the following is the PDU for application layer__B___
.
A.
datagram;
B. message;
C. frame;
D. segment
6
?/p>
bandwidth is described in _B__
A) Bytes per second
B) Bits per second
C) megabits per millisecond
D) centimeters
7
?/p>
A user who uses a user agent on his local PC receives his mail sited in a mail server by using _B___
protocol.
A)SMTP
B) POP3
C)SNMP
D) FTP
8
?/p>
As a data packet moves from the lower to the upper layers, headers are B
.
A)Added;
B. subtracted;
C. rearranged;
D. modified
9
?/p>
In TCP/IP stack, the transport layer builds the connection by
C
A) slow start
B) negotiation
C) three hand-shaking
D) sliding window