Networks and the Internet

Front

A city government is attempting to reduce the digital divide between groups with differing access to computing and the Internet. Which of the following actions is LEAST likely to be effective in this purpose? Holding basic computer classes at community centers, Providing free wireless Internet connections at locations in low-income neighborhoods, Requiring that every school and library have assistive devices that allow people with disabilities to access computer resources

Back

Putting helpful tips for operating computers on the city government website

Front

Which of the following best explains what happens when a new device is connected to the Internet? A device driver is assigned to the device. An Internet Protocol (IP) address is assigned to the device. A packet number is assigned to the device. A Web site is assigned to the device.

Back

An Internet Protocol (IP) address is assigned to the device.

Front

A user enters a Web address in a browser, and a request for a file is sent to a Web server. Which of the following best describes how the file is sent back to the user?

Back

The file is broken into packets and sent over a network. The packets must be reassembled by the user’s computer when they are received. If any packets are missing, the browser re-requests the missing packets.

Front

How is the bandwidth of a network measured?

Back

Bitrate. Higher bitrate means higher bandwidth.

Front

What is the bitrate of a system?

Back

The amount of data (in bits) that can be sent in a fixed amount of time

Front

Which of the following is a benefit of the fault-tolerant nature of Internet routing?
The ability to use a hierarchical naming system to avoid naming conflicts,
The ability to provide data transmission even when some connections between routers have failed,
The ability to resolve errors in domain name system (DNS) lookups,
The ability to use multiple protocols such as hypertext transfer protocol (HTTP), Internet protocol (IP), and simple mail transfer protocol (SMTP) to transfer data.

Back

The ability to provide data transmission even when some connections between routers have failed

Front

What is the Internet Protocol (IP)?

Back

A protocol that defines the structure of an Internet address and assigns a unique address to every device on the Internet.

Front

What information is contained in a packet?

Back

A small part of a digital message, and metadata about the message, including where it came from and where it is going.

Front

What is the purpose of the Digital Millennium Copyright Act?

Back

To criminalize the act of circumventing, or getting around, access controls that block access to copyrighted works.

Front

What is the function of the Domain Name System (DNS)?

Back

To translate domain names into IP addresses