a brief description of commands and their default values
the serial number and version number of the device used to open a support case with JTAC
a list of all the active hardware alarms on the device
a display of the current configuration while in operational mode
第1题：
A.show version
B.show chassis hardware
C.show hardware detail
D.view hardware database
第2题：
What does the protocol field inside the PPP frame indicate？（）
第3题：
A. help topic
B. help reference
C. help apropos
D. help tip
第4题：
Which command returns a list of commands in which a given keyword is used throughout the Junos hierarchies?（）
第5题：
Which of the following commands should be used to list all of the active network interfaces on a system？（）
第6题：
Refer to the exhibit. You are the network administrator of the Route.com company. You have been tasked to implement a hub and spoke EIGRP topology over Frame Relay to provide connectivity between the networks at headquarters and all 300 spokes. Before you begin the actual implementation, which three pieces of information are more important to know than the others?（）
A. the Committed Information Rate of all the Frame Relay PVCs
B. the Cisco IOS version running on all the routers
C. the router model number of all the spoke routers
D. the number of HQ networks connected behind the headquarter routers
E. the routing policy, such as whether or not the spokes can be used as backup transient point between the two headquarter routers
第7题：
What are three pieces of information that the Cisco IOS show inventory command displays on a Cisco ISR Router? （）(Choose three.)
第8题：
A.file list alarm
B.show chassis alarms
C.show chassis state
D.show hardware alarms
第9题：
What information does the help topic command provide?（）
第10题：
When troubleshooting a network， the output of the command show interfaces indicates a large number of runts. What is a runt？（）