CompTIA CN0-201 Online Practice Questions and Exam Preparation

CompTIA CN0-201 Online Questions & Answers

• Question 161:

  Which of the following problems in a PSTN circuit can cause noise and thus reduces call quality?

  A. Too many phones registering with a gatekeeper
  B. Poorly crimped connections
  C. Improper grounded lines
  D. Mismatched codecs
  B. Poorly crimped connections

• Question 162:

  Which of the following are types of Digital Subscriber Line (DSL)? Each correct answer represents a complete solution. Choose two.

  A. BDSL
  B. ADSL
  C. SDSL
  D. NDSL
  B. ADSL
  C. SDSL

• Question 163:

  Fill in the blank with the appropriate word.

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

  A. PSTN
  A. PSTN

• Question 164:

  Which of the following ITU standards specifies PCM voice coding at 64 kbps?

  A. G.726
  B. G.728
  C. G.729
  D. G.711
  D. G.711

• Question 165:

  John works as a Technician for Blue Tel Inc. He notices errors in a routing table. Which of the following layers of the OSI model is associated with this situation?

  A. Transport Layer
  B. Data Link Layer
  C. Application Layer
  D. Network Layer
  D. Network Layer

• Question 166:

  Which of the following layers of the OSI model will you use as a mean for deploying prioritization on the LAN with 802.1p?

  A. Session layer
  B. Application layer
  C. Presentation layer
  D. Data link layer
  D. Data link layer

• Question 167:

  John works as a Technician for Blue Tel Inc. He notices errors in a routing table. Which of the following layers of the OSI model is associated with this situation?

  A. Application Layer
  B. Data Link Layer
  C. Transport Layer
  D. Network Layer
  D. Network Layer

• Question 168:

  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
  D. TCP port 1723

• Question 169:

  Which of the following is also known as IP telephony or Internet telephony?

  A. Bluetooth
  B. ISDN
  C. TCP/IP
  D. VoIP
  D. VoIP

• Question 170:

  A scenario involves a pool of users with private IP addresses who need to access the Internet; however, the company has a limited number of IP addresses and needs to ensure users occupy only one public IP address. Which technology is used to allow a pool of users to share one global IP address for Internet access?

  A. Pool Address Translation
  B. Private Address Translation
  C. Port Address Translation
  D. Per-user Address Translation
  C. Port Address Translation