What is the data transmission rate of an Optical Carrier-3 (OC-3) connection?

Which of the following devices works at the data-link layer (layer 2) of the OSI model?

Which of the following tasks are performed by the session layer of the OSI model?
Each correct answer represents a complete solution. Choose all that apply.

You work as a Network Administrator for Tech Perfect Inc. The company has a TCP/IP-based
network. You want to know the current TCP/IP network configuration settings, DHCP server IP
address, and DHCP lease expiration date of your network. Which of the following utilities will you
use?

You work as a Network Administrator for McRoberts Inc. You are configuring a wireless network for
the company. You decide to use 802.11b wireless access points (WAPs) for the network. Which of
the following could affect the range of the network?
Each correct answer represents a complete solution. Choose all that apply.

You work as a Network Administrator for Perfect World Inc. The company has a TCP/IP-based
network. You are required to create a separate network for a new office constructed in the
company’s campus. The new network will be based on the 100BASE-TX standard. Which of the
following cables will you use for the network?

Mark works as a Network Administrator for Infonet Inc. The company has a Windows Server 2008
domain-based network. The network uses only IPv4 as the network protocol. The network has
twenty-five subnets. Each subnet has 1000 Windows Vista client computers. In the future, the
company’s network may expand to include up to sixty subnets with 1000 hosts per subnet. Mark
wants to assign a subnet mask to the network according to the future requirements. Which of the
following subnet masks will he assign to the network to accomplish this?

Select and place the network standards according to the maximum transmission distances they
support.

You have been hired to design a TCP/IP-based network that will contain both Unix and Windows
computers. You are planning a name resolution strategy. Which of the following services will best
suit the requirements of the network?

You work as a Network Administrator for McNeil Inc. The company has a TCP-based network. You
want to connect a new client computer to the network. You have configured the computer for
receiving IP address automatically. Which of the following services is required to be running on the
network?