第
46题:
在IPv4向IPv6的过渡期间,如果要使得两个IPv6节点可以通过现有的IPv4网络进行通信,则该使用 (1) ;如果要使得纯IPv6节点可以与纯IPv4节点进行通信,则需要使用 (2) 。
(1)
A.堆栈技术
B.双协议栈技术
C.隧道技术
D.翻译技术
(2)
A.堆栈技术
B.双协议栈技术
C.隧道技术
D.翻译技术
答案解析与讨论:
www.cnitpm.com/st/2376927349.html第
47题: 以太网链路聚合技术是将 ( )。
A.多个逻辑链路聚合成一个物理链路
B.多个逻辑链路聚合成一个逻辑链路
C.多个物理链路聚合成一个物理链路
D.多个物理链路聚合成一个逻辑链路
答案解析与讨论:
www.cnitpm.com/st/2377011837.html第
48题: POP3协议采用(1)模式进行通信,当客户机需要服务时,客户端软件与POP3服务器建立 (2) 连接。
(1)
A.Browser
B.Client/Server
C.Peer to Peer
D.peer to Server
(2)
A.TCP
B.UDP
C.PHP
D.IP
答案解析与讨论:
www.cnitpm.com/st/237711708.html第
50题:
IEEE 802.11标准采用的工作频段是 (1) ,下列标准中采用双频工作模式的是 (2) 。
(1)A.900MHz和800MHz
B.900MHz和2.4GHz
C.5GHz和800MHz
D.2.4GHz和5GHz
(2)A.IEEE802.11a
B.IEEE802.11b
C.IEEE802.11g
D.IEEE802.11n
答案解析与讨论:
www.cnitpm.com/st/2377312061.html第
51题:
PC机不能接入因特网,这时采用抓包工具捕获的以太网接口发出的信息如下:

可以看出该PC机的IP地址为(1),默认网关的IP地址为 (2) ,PC不能接入Internet的原因可能是 (3) 。
(1)A.213.127.115.31
B.213.127.115.255
C.213.127.115.254
D.224.1.1.1
(2)A.213.127.115.31
B.213.127.115.255
C.213.127.115.254
D.224.1.1.1
(3)A.DNS解析错误
B.TCP/IP协议安装错误
C.不能连接到网关
D.DHCP服务器工作不正常
答案解析与讨论:
www.cnitpm.com/st/2377428153.html第
52题: Thede facto standard Application Program Interface (API) for TCP/IP applicationsis the “sockets” interface. Although this API was developed for (1) in the early 1960s it has also been implemented on a widevariety of no-Unix systems. TCP/IP (2) Writtenusing the sockets API have in the past enjoyed a high degree of portability andwe would like the same (3) with IPv6applications. But changes are required to the sockets API to support IPv6 andthis memo describes these changes. These include a new socket address structureto carry IPv6 (4) ,new address conversion functions,and some new socket options. These extensions are designed to provide access tothe basic IPv6 features requited by TCP and UDP applications, includingmulticasting, while introducing a minimums of change into the system and providingcomplete (5) for existing IPv4 applications.
(1)A.Windows
B.Linux
C.Unix
D.DOS
(2)A.applications
B.networks
C.protocols
D.systems
(3)A.portability
B.availability
C.calability
D.reliability
(4)A.connections
B.protocols
C.networks
D.address
(5)A.availability
B.compatibility
C.capability
D.reliability
答案解析与讨论:
www.cnitpm.com/st/2377516881.html