A router that takes the workstations i...

单项选择题A router that takes the workstations internal IP address and changes it to another IP address whenit sends the data outside of the network is an example of which of the following?（）

A.NAT
B.IDS
C.NMAP
D.DMZ

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1.单项选择题Which of the following protocols is commonly used for VoIP technology?（）

A.Telnet
B.SMTP
C.SIP
D.SNMP

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2.单项选择题An administrator is experiencing availability issues on a Linux server. The administrator decides tocheck the server for an IP address conflict on the server. Which of the following commands should the administrator use?（）

A.traceroute
B.tracert
C.ifconfig
D.ipconfig

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3.单项选择题Which of the following defines access for a network?（）

A.ACL
B.RDF
C.RAS
D.ARP

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4.多项选择题Which of the following ports would have to be allowed through a firewall to allow SNMP traffic topass on its default port?（） (Select TWO).

A.22
B.23
C.143
D.161
E.162
F.8080

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5.单项选择题Which of the following wiring standards would MOST likely be used to interconnect two devices without the use of a hub or switch?（）

A.568A
B.568B
C.Crossover
D.Loopback

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6.单项选择题 After a baseline check was completed it was noted that the network was working far below the level of the last baseline.
Which of the following should the technician do NEXT to determine where the network problems are occurring?（）

A. Upgrade the firmware on all routers and switches
B. Reboot the entire network one device at a time
C. Conduct a network traffic analysis
D. Rerun the baseline to ensure the results were correct

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7.单项选择题Which of the following uses a ring topology?（）

A.DSL
B.Ethernet
C.DOCSIS
D.SONET

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8.单项选择题A user is unable to access the company website on a laptop. A network technician verifies that theuser can access other Internet pages. According to network troubleshooting methodology, which of the following steps should be taken NEXT?（）

A. Remotely connect to the user's laptop and review the network configuration settings
B. Ping the web server from inside the network to ensure it is still up and running.
C. Check to make sure the company's website is accessible from the Internet.
D. Ensure the Ethernet cable is securely plugged into the user's laptop

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9.单项选择题Which of the following would provide a technician with a performance reference point to refer backto after hardware repair?（）

A. Baseline
B. Network map
C. Wire scheme
D. Asset management

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10.单项选择题The network technician is troubleshooting a network issue by implementing a new security device.After installing and configuring the device, which of the following steps should the technician takeNEXT?（）

A. Verity full system functionality
B. Identify the main problem and question the user
C. Document their findings, actions, and outcomes
D. Escalate the issue to upper management

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