CompTIA CN0-201 Online Practice Questions and Exam Preparation

CompTIA CN0-201 Online Questions & Answers

• Question 251:

  Which of the following protocols is used for signaling between Private Branch Exchanges (PBXs) and Private Integrated Services Network (PISN)?

  A. H.248
  B. QSIG
  C. H.225
  D. H.450
  B. QSIG

• Question 252:

  Realtime Transport Protocol (RTP) operates on top of various protocols. Which of the following protocols is commonly implemented with RTP?

  A. NTP
  B. UDP
  C. STP
  D. SIP
  B. UDP

• Question 253:

  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. Availability
  B. Security
  C. Statistics
  D. Quality of service
  E. Connectivity
  F. Regulatory
  B. Security
  C. Statistics
  D. Quality of service
  E. Connectivity
  F. Regulatory

• Question 254:

  John works as a Network Administrator for NetPerfect Inc. The company has a Windows-based network. John has been assigned a project to build a network for the sales department of the company. It is important for the LAN to continue working even if there is a break in the cabling.

  Which of the following topologies should John use to accomplish the task?

  A. Mesh
  B. Bus
  C. Star
  D. Ring
  A. Mesh

• Question 255:

  You are required to configure an SIP phone. While accomplishing the task, you should also specify the standard codec for toll-grade quality. Which of the following codecs will you choose to accomplish the task?

  A. G.711
  B. G.729
  C. G.723
  D. G.726
  A. G.711

• Question 256:

  Which of the following devices is used to create VLANs in a small network?

  A. Switch
  B. Repeater
  C. Hub
  D. Bridge
  A. Switch

• Question 257:

  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
  D. Presentation layer

• Question 258:

  Which of the following provide an "always on" Internet access service when connecting to an ISP? Each correct answer represents a complete solution. Choose two.

  A. Analog modem
  B. DSL
  C. Cable modem
  D. Digital modem
  B. DSL
  C. Cable modem

• Question 259:

  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
  B. Switch

• Question 260:

  Which of the following are the key steps that must be taken while planning and implementing QoS policies? Each correct answer represents a part of the solution. Choose three.

  A. Divide traffic into classes.
  B. Identify traffic and its requirement.
  C. Remove unnecessary protocols.
  D. Define policies for each traffic class.
  A. Divide traffic into classes.
  B. Identify traffic and its requirement.
  D. Define policies for each traffic class.