By QUESTION 1
H.323 is a group of protocols defined by the International Telecommunication Union for multimedia
conferences over Local Area Networks. H.323 uses ASN.1 binary code. Which of the following
layers of the OSI model is responsible for translating, processing, and reading ASN.1 and ASCII
messages?
A. Transport layer
B. Application layer
C. Physical layer
D. Presentation layer
Answer: D
Explanation:
QUESTION 2
Which of the following devices is used to make decisions based on MAC addresses and is
considered the most appropriate device to use when limiting broadcast domains for devices that
will process voice data?
A. Layer 3 switch
B. Repeater
C. Layer 2 switch
D. MCU
Answer: C
Explanation:
QUESTION 3
Which of the following are endpoints in Cisco Unified Communications?
Each correct answer represents a complete solution. Choose two.
A. Switches
B. Routers
C. Gateways
D. IP phones
Answer: C,D
Explanation:
QUESTION 4
Which of the following is a mechanism used by the Multimedia Extensions (WME) standard to
avoid contentions in a particular traffic category?
A. Sliding Window Protocol
B. Contention Window (CW)
C. Auto-Rate Fallback
D. Maximum Segment Size (MSS)
Answer: B
Explanation:
QUESTION 5
Adam works as a Sales Engineer for Umbrella Inc. One of his customers complains that the PBX
is getting reset several times in a day. Adam finds that the power LEDs of PBX are fluttering. He
suspects that faulty power supply is the cause of this problem. Which of the following
troubleshooting tools should Adam use to verify these suspicions?
A. Continuity tester
B. Line tester
C. Volt meter
D. T-BERD 4000
Answer: C
Explanation:
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