Exam 4: Computer Networks

In the context of networking hardware, which of the following is true of wired networks that have a central device called a hub?

Conventional television and radio networks, cellular telephone networks, and satellite TV networks are examples of _____.

Linda is training to become a certified network design expert and consultant. While researching about the process of cellular radio transmissions, Linda learns that when a cell phone user begins to make a call, it is picked up by the cell tower located in the cell in which the cell phone is located and that belongs to the user's wireless provider. Which of the following is the next step in this process?

Which of the following statements is true of the Transmission Control Protocol (TCP)?

In fiber-optic cables, single fiber strands are used for full-duplex data transmissions.

Jerry sets up a small network consisting of his portable computer, mobile phone, and digital camera. Jerry designs the network such that these devices can communicate and share data whenever they get within a certain physical distance of each other. Which of the following networks has Jerry used in the given scenario?

With fixed WiMAX, it is feasible to provide coverage to an entire city or other geographical area by using _____.

Bridges for a wireless network are often called range extenders.

Latency is the amount of data that can be transferred in a given time period, such as via a bus or over a certain type of networking medium.

Jenny, a new accountant at Sroha Networks, wants to transfer official data from a colleague's hard drive to her laptop. She wants to exchange the data directly between the two systems via the Internet. Which of the following types of networks should Jenny use to perform the data transfer without asking the colleague to place the data on a Web server for her to view?

Which of the following statements is true of a network adapter?

A(n) _________ is a networking cable that contains hundreds of thin, transparent filaments over which lasers transmit data as light. A)fiber-optic cable B)twisted-pair cable C)coaxial cable D)packet-switched cable

Laura, a network administrator, is in charge of setting up various networks for the IT department of a University. For a final year project, the students of the university seek Laura's help to set up a network with multiple connections between network devices. The students need to ensure that even if one device on the network fails or if the line of connection fails, the network should function, assuming an alternate path is available. Which of the following network topologies should Laura suggest in the given scenario?

The amount of data that is actually transferred under real-life conditions is called _____.

The amount of data that is actually transferred under real-life conditions is called cardinality .

When using serial transmission, there are three possible techniques for organizing the bits being transferred. Name and describe them.

Identify a protocol that is used to retrieve emails.

Which of the following ranges of the electromagnetic spectrum is sometimes referred to as the wireless spectrum?

A single server can act as a network server, a file server, a print server, and/or a mail server or Web server.

In the context of network topologies, which of the following is true of a star network?