CompTIA CompTIA CTT+ CN0-201 Questions & Answers

• Question 271:

  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

  Correct Answer: A

• Question 272:

  Which of the following address translation types only translates one (and only one) IP address to another without using ports?

  A. Static NAT

  B. PAT

  C. Dynamic NAT

  D. NAT

  Correct Answer: D

• Question 273:

  Fill in the blank with the appropriate word.

  The __________ is composed of the local loop, the central office, and the SS7 network.

  A. PSTN

  Correct Answer: A

• Question 274:

  Which of the following techniques allows multiple computers to share one or more IP addresses?

  A. DHCP

  B. WINS

  C. NAT

  D. DNS

  Correct Answer: C

• Question 275:

  Which of the following ports must be opened on the firewall for the VPN connection using the Point-to-Point Tunneling Protocol (PPTP)?

  A. TCP port 53

  B. TCP port 443

  C. TCP port 563

  D. TCP port 1723

  Correct Answer: D

• Question 276:

  Which of the following types of attack can guess a hashed password?

  A. Evasion attack

  B. Denial of Service attack

  C. Teardrop attack

  D. Brute force attack

  Correct Answer: D

• Question 277:

  In McNeil Inc. the voicemail system is configured to send email alerts when new voicemails are left for users. Users are complaining that they are only receiving voicemails, but not email alerts.

  Which of the following is the most likely cause of this issue?

  A. Port 25 is not functioning on the email server.

  B. Port 53 is not functioning on the email server.

  C. Port 21 is not functioning on the voicemail server.

  D. Port 23 is not functioning on the voicemail server.

  Correct Answer: A

• Question 278:

  Andrew has received a call from a user on a land line indicating that she cannot place calls with her VoIP softphone, but she can check her e-mail.

  What is the first step that Andrew should take to resolve this problem?

  A. Execute ping command on her PC.

  B. Log the problem.

  C. Execute the ipconfig command on her PC.

  D. Instruct her to ping the call manager.

  Correct Answer: B

• Question 279:

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

  A. Network Layer

  B. Presentation Layer

  C. Transport Layer

  D. Application Layer

  Correct Answer: B

• Question 280:

  Trace analysis tools, management tools, and NBAR are used while implementing QoS policies. Which of the following tasks is performed by these tools during implementation of QoS policies?

  A. Defining policies

  B. Network audit

  C. Network security configuration

  D. Division of traffic into classes

  Correct Answer: B