Voice over IP is an application that requires efficient use of bandwidth and reliability. VoIP must not suffer the delays that can be seen at times with Web sites and Web applications.
Which technology can be used to help ensure the efficient transport of VoIP traffic?
A. RTP
B. QoS
C. DNS
D. RSTP
Which of the following is also known as IP telephony or Internet telephony?
A. Bluetooth
B. ISDN
C. TCP/IP
D. VoIP
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. T.37
B. T.120
C. H.323
D. SIP
Which of the following protocols prevents undesirable loops in a switched network?
A. IGRP
B. CDP
C. VTP
D. STP
Which of the following is the process of rewriting source and destination addresses of IP packets as they pass through a router or firewall?
A. SNAT
B. Supernetting
C. PAT
D. NAT
Mike works as a Sales Engineer for KBC Inc. He needs a device that will allow him to create a bridge between several users and allow the same video and voice stream to be shared.
Which of the following devices should Mike use to meet this requirement?
A. Packet filtering firewall
B. Gatekeeper
C. Session Border Controller (SBC)
D. Multipoint Control Unit (MCU)
Adam works as a Technician for PassGuide Inc. He has been asked to recommend an appropriate network bandwidth for a medium to large business. The company will use it for the IP phones, as well as for the data connection.
Which of the following would Adam recommend?
A. ISDN BRI
B. DS1
C. DS0
D. ISDN PRI
Which of the following gateway interfaces connects to the standard station port of a PBX?
A. MCU
B. EandM
C. FXS
D. FXO
Which of the following VTP modes cannot make any changes to the VLAN database?
A. VTP client
B. VTP server
C. VTP transparent
D. VTP administrator
You are working as a Voice Administrator in a company that is facing the problems of jitter, delay, and packet loss in its VoIP network. You want to fix all these issues.
Which of the following is the most likely reason for these issues?
A. There is lack of bandwidth.
B. Voice VLAN is not configured.
C. An audio codec is wrongly configured.
D. The company and the service provider are located far from each other.
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