The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n):

The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n):

Switch

The Internet is based on which three key technologies?

Client/server computing, packet switching, and the development of communications standards for linking networks and computers

The method of slicing digital messages into parcels, transmitting them along different communication paths, and reassembling them at their destinations is called:

Packet switching

The telephone system is an example of a ________ network.

Circuit-switched

Which of the following is not a characteristic of packet switching?

Packet switching requires point-to-point circuits.

In TCP/IP, IP is responsible for:

disassembling and reassembling of packets during transmission.

In a telecommunications network architecture, a protocol is:

a standard set of rules and procedures for control of communications in a network.

What are the four layers of the TCP/IP reference model?

Application, transport, Internet, and network interface

Which protocol is the Internet based on?

TCP/IP

A ________ is special software that routes and manages communications on the network and coordinates networks resources.

network operating system/NOS

Prior to the development of ________, computer networks used leased, dedicated telephone circuits to communicate with other computers in remote locations.

VOIP

A networking approach where many control functions for managing the movement of data on a network are managed by a central program separately from the network itself is known as:

software-defined networking.

Which of the following is not one of the four layers of the TCP/IP communications model?

Local area layer

Telephone networks are fundamentally different from computer networks.

True

Increasingly, voice, video, and data communications are all based on Internet technology.

True

To create a computer network, you must have at least two computers.

True

An NOS must reside on a dedicated server computer in order to manage a network.

False

A hub is a networking device that is used to filter and forward data to specified destinations on the network.

False

In a client/server network, a network server provides every connected client with an address so it can be found by others on the network.

True

Central large mainframe computing has largely replaced client/server computing.

False

Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching.

False

Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.

True

A router is a device that forwards packets of data through different networks, ensuring that the data gets to the right address.

True

Which signal types are represented by a continuous waveform?

Analog

To use the analog telephone system for sending digital data, you must also use:

A modem

Which type of network is used to connect digital devices within a half-mile or 500-meter radius?

LAN

Which type of network serves a small group of computers, allowing them to share resources and peripherals without using a dedicated server?

Peer-to-Peer

A network that spans a city, and sometimes its major suburbs as well, is called a:

MAN

A network that covers entire geographical regions is most commonly referred to as a(n):

Wide area network

Bandwidth is the:

difference between the highest and lowest frequencies that can be accommodated on a single channel.

The total amount of digital information that can be transmitted through any telecommunications medium is measured in:

bps

Digital subscriber lines:

operate over existing telephone lines to carry voice, data, and video.

T lines:

are high-speed, leased data lines providing guaranteed service levels.

A LAN could be used to connect all of the following except:

all of the computers in a city.

Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.

True

Fiber-optic cable is more expensive and harder to install than wire media.

True

The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes.

False

In a large company today, you will often find an infrastructure that includes hundreds of small LANs linked to each other as well as to corporate-wide networks.

True

An analog signal is a discrete, binary waveform that transmits data coded into two discrete states such as 1-bits and 0-bits.

False

Today, most Americans connect to the Internet through broadband connections at speeds up to 15 Mbps.

True

Which of the following is considered by many to be the defining Web 2.0 application?

Social networking

Which of the following enables multiple users to create and edit web documents?

Wiki

The "Internet of Things" refers to:

a vision of a pervasive web in which common objects are connected to and controlled over the Internet.

What service converts IP addresses into more recognizable alphanumeric names?

DNS

The child domain of the root is the:

Top-level domain

In the domain name "http://myspace.blogging.com", what are the root, top-level, second-level, and third-level domains, respectively?

.com, blogging, myspace

Which organization helps define the overall structure of the Internet?

IAB

IPv6 was developed in order to:

create more IP addresses.

Which of the following services enables logging on to one computer system and working on another?

Telnet

Instant messaging is a type of ________ service.

chat

________ integrate(s) disparate channels for voice communications, data communications, instant messaging, email, and electronic conferencing into a single experience.

Unified communications

A VPN:

is an encrypted private network configured within a public network.

Web browser software requests web pages from the Internet using which protocol?

HTTP

Together, a protocol prefix, a domain name, a directory path, and a document name, are called a(n):

uniform resource locator.

What technology allows people to have content pulled from websites and fed automatically to their computers?

RSS

The process of employing techniques to help a website achieve a higher ranking with the major search engines is called:

SEO

Which of the following statements is not true about search engines?

There are hundreds of search engines vying for user attention, with no clear leader having yet emerged.

Which of the following is an example of the "visual web"?

Pinterest

Which process is used to protect transmitted data in a VPN?

Tunneling

The advanced networking consortium representing more than 500 universities, businesses, and government agencies is known as:

Internet2

Which of the following is a challenge posed by Wi-Fi networks?

Susceptibility to interference from nearby wireless systems

Which of the following statements about RFID is not true?

RFIDs require line-of-sight contact to be read.

One or more access points positioned on a ceiling, wall, or other strategic spot in a public place to provide maximum wireless coverage for a specific area are referred to as:

Hotspots

The 802.11 set of standards is known as:

Wi-Fi