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1.
Which of the following layers of the OSI model manages communication between communication entities in a network?
2.
When a phone is lifted off-hook, it connects the two wires causing an electrical signal to flow from the phone exchange to the phone. What is this electrical signal called?
3.
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?
4.
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?
5.
Which of the following types of attack can guess a hashed password?
6.
Which of the following ports must be opened on the firewall for the VPN connection using the Point-to-Point Tunneling Protocol (PPTP)?
7.
Which of the following techniques allows multiple computers to share one or more IP addresses?
8.
Which of the following address translation types only translates one (and only one) IP address to another without using ports?
9.
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?
10.
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?