RIP有几个版本？它是基于什么路由算法，最大跳数为几跳.（）

A、2链路状态16

B、1链路状态15

C、2距离向量15

D、1距离向量16

GB/T16680-1996《软件文档管理指南》中将项目文档分为开发文档、产品文档和管理文档三类，（）属于产品文档.

A、可行性研究报告

B、开发计划

C、需求规格说明书

D、参考手册和用户指南

Which three are well-known mandatory BGP attributes? （）

Origin

AS path

Next hop

Community

Multiple exit discriminator

According to JUNOS software route selection algorithm, which IS-IS route type is most preferred?（）

A、Level 1 internal routes

B、Level 1 external routes

C、Level 2 internal routes

D、Level 2 external routes

系统自带的电子邮件收发软件叫做（）。

A、Outlook

B、MediaPlayer

C、录音机

You issue the ping interface t1-1/1/0 1.1.1.1 bypass-routing count 1000 rapid command.Which statement is correct?（）

A、The bypass-routing parameter is used to test the density on the T1 line

B、The bypass-routing parameter cannot be used on a T1 interface

C、The bypass-routing parameter allows you to ping a host through an interface that has no route through it

D、The bypass-routing parameter allows you to ping a local WAN interface without generating any outbound traffic