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B. Collision domains
C. Port mirroring
D. Spanning-tree protocol

Answer(s): D
QUESTION: 14
Joe has a small office and is looking to replace his phone system with a lower cost solution that
requires minimal in-house support. Which of the following is the BEST choice?

A. Wide Area Network
B. NAT
C. Virtual PBX
D. Virtual LAN

Answer(s): C
QUESTION: 15
Which of the following protocols is commonly used for VoIP technology?

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

Answer(s): C
QUESTION: 16
If a NIC does not have a link light, there is a failure at which of the following OSI layers?

A. Physical
B. Session
C. Data link
D. Presentation

Answer(s): A
QUESTION: 17
Which of the following protocols would Kurt, a technician, use to synchronize local date and time
of a client workstation to that of a server?

A. RTP
B. NTP
C. TFTP
D. ARP

Answer(s): B

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