Sample Questions:

Rick, an administrator of a TCP/IP network, wants to achieve the following goals: l Reduce congestion of network traffic. l Optimize the utilization of the IP address space. Which of the following technologies may help him to accomplish the task?

Subnetting

Supernetting

Routing

Pinging

The H.323 protocol uses ASN.1 binary code and the Session Initiation Protocol (SIP) uses ASCII text standard to format its messages. Which of the following layers of the OSI model is responsible for translating, processing, and reading ASN.1 and ASCII messages?

Transport layer

Network layer

Application layer

Presentation layer

Which of the following parameters are generally used to describe quality of service for IP-based voice and video? Each correct answer represents a complete solution. Choose all that apply.

Bandwidth

Latency

Packet loss

Jitter

Flow based QoS tools automatically recognize flows. On which of the following things, this flow recognition is based? Each correct answer represents a part of the solution. Choose three.

Port numbers

Source and destination address

Transport layer protocol

MAC address

You work as a Network Administrator for McNeil Inc. The company has a TCP/IP-based network. Performance of the network is slow because of heavy traffic. A hub is used as a central connecting device in the network. Which of the following devices can be used in place of a hub to control the network traffic efficiently?

Repeater

Router

Switch

Bridge

Which of the following describes the process of not transmitting information over the network when one of the parties involved in a telephone call is not speaking to reduce bandwidth consumption?

Silence suppression

OFDM

PCM

QoS