Mike works as a Technician for Umbrella Inc. The company is using symmetric Network Address Translation (NAT) in their network. Mike requires a workaround for the SIP devices. Mike is using IP phones from multiple vendors, as well as open source SIP clients.
Which of the following solutions will work to allow the SIP implementation to pass through the NAT solution?
A. TURN
B. UPnP
C. 802.1p
D. STUN
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. Volt meter
B. Continuity tester
C. T-BERD 4000
D. Line tester
Session Border Controllers (SBCs) commonly maintain full session state.
Which of the following functions are offered by a Session Border Controller? Each correct answer represents a complete solution. Choose all that apply.
A. Connectivity
B. Statistics
C. Quality of service
D. Regulatory
E. Availability
F. Security
You work as a technician for McNeil Inc. You want to capture packets linked to SIP and HTTP using the same application.
Which of the following monitoring tools will you use to accomplish the task?
A. SIP analyzer
B. Traffic generator
C. Spectrum analyzer
D. Protocol analyzer
You work as a technician for TechPerfect Inc. There are up to 25 telecommuters using VoIP at any given time. You want to ensure that the Web browsing performed by the valid users on your network does not interfere with the required bandwidth for VoIP communications across the Internet.
Which of the following technologies will allow you to ensure that the users can browse the Internet while not allowing these users to thwart the operations of the telecommuters?
A. Traffic policing
B. Traffic shaping
C. Packet filtering
D. Traffic generator
Henry works as a Sales Engineer for BlueWells Inc. Sam, a customer, has asked him to create a solution that allows an application to be shared across the internet. The solution should be extensible and based on industry standards. The solution should not use a proprietary protocol and the application should be delivered to multiple recipients at the same time.
The solution should also be robust, as clients will be using the application from Macintosh, Windows, and Linux systems.
Which of the following protocols should Henry choose to fulfill Sam's requirement?
A. SIP
B. T.120
C. T.37
D. H.323
Which of the following describes the process of not transmitting information over the network when one of the parties involved in a telephone call is not speaking to reduce bandwidth consumption?
A. Silence suppression
B. PCM
C. QoS
D. OFDM
The H.323 protocol uses ASN.1 binary code and the Session Initiation Protocol (SIP) uses ASCII text standard to format its messages.
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. Presentation layer
C. Application layer
D. Network layer
Which of the following is a QoS technique that uses the precedence bits in the IP header?
A. DiffServ
B. IEEE 802.1p
C. RSVP
D. IntServ
Which of the following communications technologies provides access to a large pool of customer service agents and multiple channels of communication as well as customer self-help tools?
A. Rich-media conferencing
B. Video telephony
C. IP telephony
D. Contact center
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