CHAPTERS 5 - 8

IP Address

a series of numbers used to identify a network device. It is separated into four sections by periods for the convenience of human readers.

PAN (Personal Area Network)

a term sometimes used to refer to the interconnection of personal digital devices or consumer electronics within a range of about 30 get (10 meters) and without the use of wires or cables.

MAC Address

a unique number assigned to a network interface card when it is manufactured.

PSK (pre-shared key)

also referred to as personal mode, is a type of WPA used on most home networks. All workstation has the same key to connect to the network.

Plaintext

an original message that has not yet been encrypted

Drive mapping

assigns a letter to a storage device located n a network workstation.

Analog Signal

depicted as smooth wave

Digital

depicted as stepped wave.

DHCP (dynamic host configuration protocol)

designed to automatically distribute IP Address.

ICANN

domain names are assigned by _______?

Public key encryption (PKE)

eliminates the key-distribution problem by using one key to encrypt a message, but another key to decrypt the message.

Star topology

features a central connection point that links cables of handles wireless broadcasts to all workstations and peripherals.

Peer-to-Peer mode

files and applications can be shared among workstations operating as _________? Examples of Popular file sharing systems are Gnutella, Kazaa, and BitTorrent

Print server

handles jobs sent to network printers.

Shared resources

hardware, software, and data made available for authorized network users to access.

Octet

in binary it is represented by eight bits.

Symmetric key encryption

in which the key is used to encrypt a message is also used to decrypt the message.

MiFi

is a brand name for a compact, mobile, wireless router offered by Novatel Wireless. The term is sometimes applied to similar routers produced by other manufacturers that can form a network of about five clients.

Homegroup

is a collection of trusted networked computers that automatically share files and folders.

Network Hub

is a device that links two or more nodes of a wired network.

Wireless access point

is a device that transmits and receives wireless signals.

Gateway

is a generic term for any device or software code used to join two networks, even if those networks use different standards.

Network Switch

is a more sophisticated connection device that sends data only to the devices specified as the destination.

Network router

is a network device that can ship data from one network to another.

Home PNA

is a network technology that utilizes existing telephone wires or coaxial cables to connect network devices.

Communications Channel or a link

is a physical path or frequency for signal transmissions.

Cryptographic Algorithm

is a procedure for encrypting or decrypting a message.

Wireless Router

is a wireless access point that also includes routing circuitry designed to connect a Wi-Fi network to the internet.

Cryptographic key (usually just called a key)

is a word, number, or phrase that must be known to encrypt or decrypt a message

Network Peripheral or Network-enabled peripheral

is any device that contains network circuitry to directly connect t a network. examples are, printers, scanners, and storage devices.

Network Device aka Network appliance

is any electronic device that broadcasts network data, boosts signals, or routes data to its destination.

Tree topology

is essentially a blend of star and bus networks. Multiple star networks are connected into a bus configuration by a backbone.

Strong encryption

is loosely defined as "very difficult to break".

Wired network

is one of that uses cables to connect network devices.

Wireless Network Key (network security key)

is the basis for scrambling and unscrambling the data transmitted between wireless devices.

GET

is the most frequently used HTTP method

SSID (service set identifier)

is the name of wireless network. This helps you log into the right network.

Bandwidth

is the transmission capacity of a communications channel. Its digital data is usually measured in bits per second.

WEP (Wired Equivalent Privacy)

it was designed to provide a level of confidentiality similar to that of a wired network.

Router Software

keeps track of everyone who is accessing a network, and it can be used to uncover intrusions.

Microwaves

provide another option for transporting data over wireless networks. This can be aimed in just a single direction.

LAN

this technologies are standardized by the institute of Electrical and Electronics Engineers (IEEE) Project 802 - Local Network Standards.

Encryption

transforms a message in such way that its contents are hidden from unauthorized readers. It is designed to keep messages secret.

Wireless Ad-hoc network

transmit from one workstations to another, whereas an infrastructure network uses a centralized access point or router to relay signals to workstations.

Powerline network

transmits network data as radio signals over the wires that supply electricity to wall outlets.

Wireless Infrastructure Network

uses a centralized broadcasting devices, such as a wireless access point or router.

Cache

when your browser fetches pages and graphics to form a Web page, it stores then in temporary files on your hard drive called a web________?

A(n)________ adds HTML tags to a document, spreadsheet, or other text-based file to create an HTML document that can be displayed by a browser.

HTML conversion utility

Packet

is a parcel of data that is sent across a computer network.

Ciphertext

referred to an encrypted message.

Communications protocol

refers to a set of rules for efficiently transmitting data from one network to another.

Wi-Fi

refers to a set of wireless networking technologies defined by IEEE 802.11 standards that are compatible with Ethernet.

Application server

runs application software for network workstations

Bus topology

uses a common backbone to connect all network devices.

You need your own domain name if

you have your own Web site

5 Mbps

3G technologies have speeds ranging from 200 Kbp to

Professionals opt to have at least ____ of RAM on their computer's hard disk.

4 GB

The audio CDs you buy at your favorite music store are recorded at a sampling rate of

44.1 kHz

Piconet

A bluetooth network is sometimes called a _____?

Swarm

A group of computers temporarily networked to download a file is a ______?

DHCP

A protocol know as ________ is designed to automatically distribute IP addresses.

Weak encryption

Caesar's simple substitution key is an example because it is easy to decrypt even without the algorithm and key.

1G

Data transport rates depend on the technology of the cellular system. The generation of cellular technology associated with analog voice service is _______?

Narrowband

Dial-up Internet access is an example of a(n)_____________ communications system.

A _______ watermark is a pattern of bits inserted at various places in an image or a content stream that can be used to track, identify, verify, and control content use.

Digital

A C2C e-commerce transaction occurs when individual consumers purchase goods and services from online merchants.

False

A scanner creates a vector graphic.

False

Accessing Internet mobility is possible with most of todays wired or wireless Internet technologies.

False

All IP addresses are dynamic

False

An infrared port will transfer a digital photo from a camera to a computer faster that a serial USB, or Firewall port.

False

Cloud computing is the term given to analyzing cloud patterns and, with the help of the computer, predicting the weather.

False

HTTP is a markup language that works with TCP/IP to deliver Web resources to the desktop.

False

Microwaves cannot be aimed in a single direction and have less carrying capacity that a radio waves.

False

S-HTTP creates a secure connection between a client and a server over which any amount of data can be sent securely.

False

The www in a URL is part of a domain name

False

When configuring local e-mail, the incoming and outgoing servers must have the same settings.

False

Whether you acquire an image from a digital camera or a scanner, bitmap graphics tend to require very little storage space.

False

With videos shown on a small computer screen at a fairly low resolution, recording with an inexpensive camera will not make a difference on the quality of the final video.

False

50KB

Melissa wants to ensure that the resume she attaches to the e-mail messages she is sending to the potential employers will successfully make it to them. She should try to limit the size of the attachment to ____ or less for dial-up connections.

Client/server mode

Networks that include one or more servers

WPA (Wi-Fi Protected Access)

Offers stronger protection by making sure that packets have not been intercepted or tampered with in any way.

The _______ bitmap graphics file format compresses bitmap data without losing any data and supports trillions of colors.

PNG

A(n)__________ is a device that contains a variety of input and output jacks, plus audio-processing circuitry.

Sound card

A Web server's response to a browser's request includes HTTP _________ that indicates whether the browser's request could be filled.

Status code

Narrowband

Systems with less capacity, such as dial-up internet access is referred to as ______?

After videotaping her sister's wedding with an analog video camera, Nancy decided to edit out some of the footage using her computer. She finds that, although she has connected her camera, with the videotape, to her computer, she cannot access the video footage. Why?

The analog video footage must be first converted into a digital form.

Broadband

This is referred to as High Bandwidth communications systems, such as cable TV and DSL

Node

This is referred to as each connection point on a network.

Star

Thomas is designing a wired home network with six nodes for a friend. His friend has asked that the network be configured such that, if one link fails, the rest of the network will still function.

Network Interface card (NIC)

To connect to a LAN, a computer requires network circuitry referred to as .......?

A conversion process called MIME provides a clever way of disguising digital photos, sounds, and other media as plain ASCII code that can travel over the Internet as e-mail attachments.

True

A vector graphic resizes better than a comparable bitmap graphic.

True

BitTorrent uses P2P technology

True

Digital video formats are often referred to ad container formats, because they serve as a receptacle for all the elements of a video.

True

E-mail is based on store-and-foward technology.

True

Each pixel in a monochrome bitmap grid, is stored as a bit.

True

Free file-sharing sites, popular in the 1990s, had a devastating effect on the recording industry.

True

HTML is called a markup language because authors mark uo their documents by inserting HTML tags, which represent special instructions that specify how the document should appear when displayed on a computer screen or printed.

True

IP Addresses can be assigned by ISPs or system managers.

True

MAC addresses are used for some low-level network functions and can also be employed to establish network security.

True

Many search engines keep records of your query

True

Most Firewall software is preconfigured to block only unnecessarily open ports targeted by hackers.

True

One of the most common ways of gaining unauthorized access to a network is by looking for open ports.

True

Some modems allow you to temporarily suspend data transfers while answering a voice call.

True

The framework for an HTML document consists of two sections: a head and a body.

True

To use portable satellite technology you must take your satellite with you .

True

You must pay for a domain name.

True

When you view a page infested with a(n)_______, an HTTP set-cookie request automatically goes to a third party server, which may set a cookie on your computer for later retrieval or record your IP address.

Web bug

When should you use a digital camera rather than a scanner?

When you want to create an image of a real object.

Ethernet adapter (also called an ethernet card or NIC)

You can purchase and install this if your computer does not come with a port

Ciphertext

____________ is a crucial technology for e-commerce and email.

Transceiver

a combination of both a transmitter and receiver.

LAN (Local Area Network)

a data communications network that connect personal computers within a vary limited geographical area-usually a single building.

Ethernet

a packet is broadcast to every device, but is accepted only by the device to which is it addressed. Data travels on a first-come, first-served basis. If two workstations attempt to send at the same time, a collision occurs.

LAN Jacking

a practice with wireless network data floating freely through the air, hackers have an easy time intercepting signals by cruising through a business district or neighborhood with a Wi-Fi enabled notebook omputer

MAN (Metropolitan Area Network)

a public high-speed network capable of voice and data transmission within a range of about 50 miles (80 km).

Cookie

enables a Web server to keep track of your activity and compile a list of the your purchases.

Adobe Illustrator

is not an video editing software

Graphics files that contain both bitmap and vector data are called________.

metafiles

Copy

protection refers to technologies designed to prohibit consumers from copying content.

MIMO (Multiple-input multiple-output)

technology uses two or more antennas to essentially send multiple sets of signals between network devices.

Physical topology

the arrangement of devices in a network is _________?

Screen size

the disadvantage of WAP-enabled device is their___________?

Decryption

the reverse process-converting ciphertext into plaintext

AES (Advance Encryption Standard)

the technology used for WPA2, is one of the strongest crytographic algorithms.

Packet switching

this divides a message into several packets that can be routed independently to their destination.

FQDN

this is a easy way to remember most Internet servers name

Wireless network

transports data from one device to another without the use of cables or wires.

Infrared Light

can also carry data signals, but only for short distances and with a clear line of sight.

Wi-Fi adapter (also called a Wi-Fi card or wireless network controller)

can be plugged into a USB port and be used to upgrade any type of computer.

Cable internet service needs

circuitry to handle Ethernet protocols and cable modem

RF Signals (Radio Frequency Signals)

commonly called radio waves are sent and received by a transceiver that is equipped with an antenna.

Ring topology

connects all devices in a circle, with each device having exactly two neighbors.

Mesh topology

connects to each network device to many other network devices. Data traveling on this network can take any of several paths from its destination.

For the next search, Elizabeth wants only Web pages containing the complete phrase "Mars exploration." Which screen operator should she use to formulate the query?

quotation marks

Network Attached Storage (NAS)

referred to a storage device that directly connects to a network.

Wireless Encryption

scrambles the data transmitted between wireless devices and then unscrambles the data only on devices that have valid encryption key.

Bluetooth

short range wireless network technology thats designed to make its own connections between electronic devices, without wires, cables, or any direct action from a user.

Circuit switching

some communications networks, such as telephone system, use this technology

File server

stores files that supplies them to workstations on request.

CSMA/CD Protocol

takes care of situations in which two network devices attempt to transmit packets at the same time.

Handshaking

this is referred to when two computers on a network might negotiate their communications protocols