CompTIA CompTIA CTT+ CN0-201 Questions & Answers

• Question 261:

  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. Regulatory

  B. Availability

  C. Statistics

  D. Connectivity

  E. Quality of service

  F. Security

  Correct Answer: ACDEF

• Question 262:

  Which of the following layers of the OSI model is responsible for converting between ASCII and EBCDIC?

  A. Data link layer

  B. Application layer

  C. Session layer

  D. Presentation layer

  Correct Answer: D

• Question 263:

  Which of the following are the actual portions of the telephone number as defined in the North American Numbering Plan? Each correct answer represents a complete solution. Choose all that apply.

  A. Number Plan Area

  B. Caller Identification Code

  C. Custom Rings

  D. Central Office Code

  Correct Answer: ABD

• Question 264:

  Which of the following are the benefits of using Virtual local area network (VLAN) in a company's network? Each correct answer represents a complete solution. Choose all that apply.

  A. It prevents adware and spyware from infecting the network.

  B. It simplifies adding and moving hosts on the network.

  C. It improves security, as broadcasts are limited.

  D. It allows access to network services based on a department, not the physical location.

  Correct Answer: BCD

• Question 265:

  Which of the following devices works at the data link layer of the OSI model and is therefore an ideal device for creating a new broadcast domain for a voice device?

  A. Hub

  B. Switch

  C. Brouter

  D. Bridge

  Correct Answer: B

• Question 266:

  John works as a CCNA Voice Associate; he is working in a company that is facing the problems of Jitter, delay, and packet loss in its VoIP network. John wants to fix all these issues, but he is unable to find the main cause of these problems.

  Which of the following is the most likely reason for these issues?

  A. Voice VLAN is not configured.

  B. There is lack of bandwidth.

  C. The company and the service provider are located far from each other.

  D. An audio codec is wrongly configured.

  Correct Answer: B

• Question 267:

  Which of the following ports are used by H.323 protocol? Each correct answer represents a complete solution. Choose all that apply.

  A. UDP ports 1718 and 1719

  B. TCP ports 110

  C. TCP ports 1720 and 1503

  D. TCP ports 25

  Correct Answer: AC

• Question 268:

  Cisco Unified Contact Center is used to distribute calls to groups and agents in organizations. It uses computer telephony integration (CTI). What is the function of CTI?

  A. Popping up a window on the user's computer screen with caller details

  B. Preventing users' computers from unwanted intrusions

  C. Rejecting unwanted calls

  D. Scheduling calls to specific users

  Correct Answer: A

• Question 269:

  Which of the following are the reasons why DiffServ model is better than the IntServ model for scaling? Each correct answer represents a complete solution. Choose all that apply.

  A. It keeps flow state on each node.

  B. It continuously signals to maintain reservation.

  C. It requires complex configuration to match criteria for each possible flow.

  D. It is a flow based architecture

  Correct Answer: ABD

• Question 270:

  Which of the following components of a VoIP network allows users to view video streams and hear audio that originates at a remote user station?

  A. Call agent

  B. MCU

  C. IP Phones

  D. Videoconference station

  Correct Answer: D