软题库 学习课程
当前位置:信管网 >> 在线考试中心 >> 信息系统项目管理师题库 >> 试题查看
试卷年份2018年上半年
试题题型【单选题】
试题内容

PGP的功能中不包括()。
A.邮件压缩
B.发送者身份认证
C.邮件加密
D.邮件完整性认证

查看答案

相关试题

10题: 在路由器执行()命令可以查看到下面信息。

A.display current-configuration
B.display ip interface brief
C.display stp brief
D.display rip 1 route
答案解析与讨论:www.cnitpm.com/st/4033922343.html

11题: 下图所示的网络拓扑中配置了RIP协议,且RIP协议已更新完成。
下表所示为AR2路由器上查看到的路由信息。

从查看到的路由信息可以判断(65),造成故障的原因是(66)。
(65)A.在AR2上ping172.16.0.1丢包
B.在AR1上ping3.3.3.3丢包
C.在AR1上ping172.16.1.1丢包
D.在AR3上ping1.1.1.1丢包
(66)A.在AR1上环回地址172.16.0.1配置错误
B.在AR3上环回地址172.16.1.1配置错误
C.RIPv1不支持无类网络
D.RIPv2不支持无类网络
答案解析与讨论:www.cnitpm.com/st/4034024587.html

12题: 下面关于路由器的描述中,正确的是()。
A.路由器中串口与以太口必须是成对的
B.路由器中串口与以太口的IP地址必须在同一网段
C.路由器的串口之间通常是点对点连接
D.路由器的以太口之间必须是点对点连接
答案解析与讨论:www.cnitpm.com/st/403418680.html

14题: 如果DHCP客户端发现分配的IP地址已经被使用,客户端向服务器发出()报文,拒绝该IP地址。
A.DHCPRelease
B.DHCPDecline
C.DHCPNack
D.DHCPRenew
答案解析与讨论:www.cnitpm.com/st/4034324114.html

15题: 在层次化园区网络设计中,()是汇聚层的功能。
A.高速数据传输
B.出口路由
C.广播域的定义
D.MAC地址过滤
答案解析与讨论:www.cnitpm.com/st/403445315.html

1题: With circuit switching,a(71)path is established between two stations for communication.Switching and transmission resources within the networkare(72)for the exclusive use of the circuit for the duration of the connection.The connection is(73):Once it is established,it appears to attached devices as if there were a direct connection.Packet switching was designed to provide a more efficient facility than circuit switching for(74)data traffic.Each packet contains some portion of the user data plus control information needed for proper functioning of the network.A key distinguishing element of packet-switching networks is whether the internal operation is datagram or virtual circuit.With internal virtual circuits,a route is defined between two endpoints and all packets for that virtual circuit follow the(75)route,With internal datagrams,each packet is treated independently,and packets intended for the same destination may follow different routes.
71、A.unique
B.dedicated
C.nondedicated
D.independent
72、A.discarded
B.abandoned
C.reserved
D.broken
73、A.indistinct
B.direct
C.indirect
D.transparent
74、A.casual
B.bursty
C.limited
D.abundant
75、A.same
B.different
C.single
D.multiple
答案解析与讨论:www.cnitpm.com/st/4034512931.html