lesson 3

Each segment of a dotted quad consists of a number between:

0 and 255.

How many bits does the Internet Protocol version 6 (IPv6) address format use?

128

Which device connects a wireless local area network to a wireless phone network at broadband speeds?

4G mobile hotspot

To which type of server are you usually transferred when you download software programs and documents from Web sites?

A File Transfer Protocol (FTP) server

What is a local area network (LAN)?

A group of computers connected within a confined geographic area

In computer terminology, what is a network?

A group of two or more computers connected so they can communicate, share resources and exchange information with one another

What is the Internet?

A worldwide network of interconnected networks

What happens when you click a hypertext link?

Another location in the same Web page or another Web page appears.

Which of the following is an accurate description of cloud computing?

B Hosted applications and services offered by a third party and run almost entirely from one or more servers that reside on the Internet

How are wide area networks (WANs) created?

By connecting LANs to one another via public carriers

Which of the following is a common advantage of cloud computing?

Cost reduction

What is the name of the problem-solving model in which a task ordinarily performed by one person is outsourced to a large group or community in order to obtain and analyze large amounts of data?

Crowdsourcing

What are E carriers?

Dedicated digital telephone lines used in Europe

What are T carriers?

Dedicated digital telephone lines used in North America

What are fractional T and E lines?

Digital phone lines consisting of one or more individual T or E carrier channels, rather than the entire T or E carrier line

Which of the following is used solely to resolve human-readable domain names into their computer-readable IP addresses?

Domain name servers

Why might a Web page appear differently in different browsers?

Each browser interprets HTML somewhat differently.

Which of the following connection types provides the fastest direct connection speed?

Fiber-optic cable

Which of the following wireless mode types uses a centralized access point known as a wireless access point (AP)?

Infrastructure

In the client/server environment, what is the main function of client software?

It enables users to communicate with and request information from the server.

What function does the Domain Name System (DNS) perform?

It resolves IP addresses into easily recognizable text-based names.

What is the term for a device that converts digital data from a computer into analog signals and back again?

Modem

Which server type provides text output that users can access at their convenience and also allows multi-person input?

News server

Which of the following protocols can connect an entire network to the Internet?

Point-to-Point Protocol over Ethernet (PPPoE)

Which of the following enabled private (i.e., commercial) business to be conducted over networks connected to NSFnet?

Private telecommunications companies

What is the term for a server at the highest level of the Domain Name System (DNS)?

Root-level server

What is the term for a device that determines the best path for data to take across a network

Router

What is Internet Protocol (IP)?

The protocol by which data is sent from one computer to another on the Internet

What is a top-level domain in the Domain Name System (DNS)?

The right-side component of a domain name, which categorizes domains into groups by common type or geography

What is the primary function of a network server?

To act as a central repository of programs and data to which all users connected to the network have access

What is the main purpose of a file server?

To store shared data

What enables dissimilar systems connected to the Internet to communicate with one another?

Transmission Control Protocol/Internet Protocol (TCP/IP)

A LAN can be connected to the Internet by a router, provided that the LAN uses:

Transmission Control Protocol/Internet Protocol (TCP/IP).

What is a wide area network (WAN)?

Two or more local area networks (LANs) that span a wide geographic area

What is the term for a software application that enables users to access and view Web pages on the Internet?

Web browser

What is the term for a collection of related HTML documents located on a host computer on the Internet?

Web site

In an IP address such as 72.44.192.233, the last number in the address (on the far right) identifies:

a specific computer.

Which of the following top-level domains would generally refer to an Internet Service Provider (ISP)?

net

Direct Internet connections:

provide continuous access to the Internet through permanent network connections.

In the client/server model:

the server is responsible for storing and providing information.