Exam 10: Communicating Digital Content

Identify the letter of the choice that best matches the phrase or definition. -Standard that specifies how wireless devices communicate over the air in a wide area.

____________________ is a set of standards for digital transmission of data over standard copper telephone lines.

-What is TCP/IP and how does it work? Define packet switching in the course of your response.

A DSL modem converts digital signals to analog signals and vice versa so that data can travel along an analog phone line.

Critical Thinking Questions Case 10-1 You have taken a new job as a network administrator. Although you have been an IT professional within your organization for a number of years, this particular responsibility is a new one for you, so you have been studying network topologies, for example. -If you are charged with setting up a network for your team and there is one device whose reliability you are concerned about, which of the following network topologies is a bad idea for you? a. bus b. star c. ring d. intranet

Depending on the transmission media used, Ethernet networks have data transfer rates that range from 10 Gbps for small office/home users to 1000 Gbps for enterprise users.

What term is used to describe the time it takes a signal to travel from one location to another on a network?

For best performance of a communications channel, which of the following should be true?

Identify the letter of the choice that best matches the phrase or definition. -A network standard that specifies how two devices use short-range radio waves to communicate at high speeds with each other.

Which group developed the WiMAX standard?

IP hijacking is one of the largest Internet security threats.

Today, ____________________ is the most popular LAN technology because it is relatively inexpensive and easy to install and maintain.

-A star network consists of a single central cable, to which all computers and other devices connect.

In a fiber-optic cable, each strand, called an optical fiber, is as thin as a human hair.

Which of the following is true of DSL?

____________________ is a network technology that defines how messages are routed from one end of a network to the other, ensuring the data arrives correctly by dividing it into packets.

-Which of the following defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used?

Which of the following enables a computer or device that does not have built-in networking capability to access a network?

Which of the following is not an example of a dedicated line?

Which of the following technologies is your new mobile phone payment device most likely to use?