You want to log into the router and make a configuration change.After loggin in as the root user, what is the next command you must enter?（）

A、enable

B、configure

C、edit

D、cli

You have been asked to configure your router to send link-related SNMP trap notifications to the network managemetn system (NMS) located at address 172.16.17.1.Which two commands are required?（）

set snmp trap-group my-trap-group targets 172.16.17.1

set snmp targets 172.16.17.1

set snmp trap-group my-trap-group link-status

set snmp trap-group my-trap-group categories link

Which statement is true about the routing table?（）

A、The routing table exists in the control plane only

B、The routing table exists in the control plane and the forwarding plane

C、The routing table contains both active and inactive routes

D、The routing table is stored on compact flash

在Windows操作系统中用于路由追踪的命令是？（）

A、Netstat

B、Route Print

C、Traceroute

D、Tracert

E、Nbtstat

有以下程序：#includemain(){　intc,d;　c=(13>>1)|1;　d=(13>1)||1;　printf("%d,%d",c,d);}程序运行后的输出结果是（　　）。

A、6,1

B、1,1

C、7,1

D、7,2

TD-LTE系统中，信令在Uu接口RLC层采用的实体模式包括（）。

A、TM

B、UM

C、AM

D、DM