A network technician has determined a managed network switch has failed. The technician knows how to install a new switch, but not how to properly configure it. Which of the following troubleshooting steps should the technician take NEXT?
A. Escalate the problem
B. Identify potential effects
C. Test the theory to determine cause
D. Establish a plan of action to resolve the problem
A user is unable to open up websites on the Internet from a browser. The administrator determines that the workstation can ping its local gateway, but not the remote web server. At which of the following layers of the OSI model does the problem MOST likely exist?
A. Data link
B. Network
C. Session
D. Physical
The application layer in the TCP/IP model is comparable to which of the following layers in the OSI model?
A. Layer 2
B. Layer 5
C. Layer 6
D. Layer 7
Using source port numbers as a way to keep track of connections is a characteristic of which of the following protocols?
A. TCP
B. UDP
C. NAT
D. PAT
Which of the following network devices builds a table of ports to MAC addresses to forward packets only to necessary ports?
A. Switch
B. Hub
C. Router
D. Repeater
The TCP/IP application layer contains which of the following OSI layers?
A. Layers 1, 5, 6, 7
B. Layers 4, 7
C. Layers 5, 6, 7
D. Layer 7
Which of the following is MOST commonly implemented for remote access to UNIX systems?
A. SSL
B. RSH
C. SSH
D. RDP
Which of the following protocols is used to send time synchronization updates on a given network?
A. NTP
B. POP3
C. DNS
D. IMAP
Which of the following network protocols is used to transport email across the Internet?
A. NTP
B. SSH
C. SMTP
D. SNMP
Which of the following would be used to run an instance of a Layer 2 device within an application?
A. Virtual switch
B. Virtual router
C. Virtual PBX
D. NaaS
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