Exam terms Flashcards

1
Q

(DOD) A category of “fires” employed for offensive purposes in which actions are taken through the use of computer networks to disrupt, deny, degrade, manipulate, or destroy information resident in the target information system or computer networks, or the systems/networks themselves.

A

DoD- Department of defense

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2
Q

The Advanced Research Projects Agency-Energy (ARPA-E) advances high-potential, high-impact energy technologies that are too early for private-sector investment. ARPA-E awardees are unique because they are developing entirely new ways to generate, store, and use energy.

A

ARPA- Advanced research project Agency

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3
Q

The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications and Information Communication Technology such as X. 509 for cybersecurity, Y. 3172 and Y. … The standardization efforts of ITU started in 1865 with the formation of the International Telegraph Union (ITU).

A

ITU-T- International Telecommunication Agency- Telecommunication sector

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4
Q

The American National Standards Institute is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.

A

ANSI- American National Standard Institute

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5
Q

The International Organization for Standardization (ISO) is an international nongovernmental organization made up of national standards bodies; it develops and publishes a wide range of proprietary, industrial, and commercial standards and is comprised of representatives from various national standards organizations.

A

ISO- International Organization for Standardization- responsible for OSI Model

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6
Q

The open systems interconnection (OSI) model is a conceptual model created by the International Organization for Standardization which enables diverse communication systems to communicate using standard protocols.

A

OSI- Open System Interconnection

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7
Q

In telecommunications, a protocol data unit is a single unit of information transmitted among peer entities of a computer network. A PDU is composed of protocol-specific control information and user data.

A

PDU- Protocol Data unit- what data is called

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8
Q

The Simple Mail Transfer Protocol is an internet standard communication protocol for electronic mail transmission. Mail servers and other message transfer agents use SMTP to send and receive mail messages.

A

SMTP- Simple Mail Transfer Protocol- the server you would send the mail to- uses TCP

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9
Q

POP3 is a one-way client-server protocol in which email is received and held on the email server. The “3” refers to the third version of the original POP protocol. A recipient or their email client can download mail periodically from the server using POP3.

A

POP3- Post Office Protocol version 3- the server you would retrieve the mail from- uses TCP

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10
Q

IMAP4 stands for Internet Mail Access Protocol version 4, is an Internet standard protocol for storing and retrieving messages from Simple Mail Transfer Protocol (SMTP) hosts.

A

IMAP4- Internet Message Access protocol version 4- the server you would retrieve the mail from (keeps
a copy of the mail)- uses TCP

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11
Q

Usage. SSH is typically used to log into a remote machine and execute commands, but it also supports tunneling, forwarding TCP ports and X11 connections; it can transfer files using the associated SSH file transfer (SFTP) or secure copy (SCP) protocols. SSH uses the client–server model.

A

SSH- Secure Shell- encrypted remote access- uses TCP

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12
Q

Hypertext Transfer Protocol (often abbreviated to HTTP) is a communications protocol. It is used to send and receive webpages and files on the internet. It was developed by Tim Berners-Lee and is now coordinated by the W3C. HTTP version 1.1 is the most common used version today.

A

HTTP- Hyper Text Transfer protocol- Transfer HTML (Hyper Text Markup Language) from a Web server to
a browser- uses TCP

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13
Q

Hypertext Transfer Protocol Secure is an extension of the Hypertext Transfer Protocol. It is used for secure communication over a computer network, and is widely used on the Internet. In HTTPS, the communication protocol is encrypted using Transport Layer Security or, formerly, Secure Sockets Layer.

A

HTTPS- Hyper Text Transfer Protocol Secure- Same as HTTP, by data is encrypted in transit- uses TCP

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14
Q

The World Wide Web, commonly known as the Web, is an information system where documents and other web resources are identified by Uniform Resource Locators, which may be interlinked by hyperlinks, and are accessible over the Internet.

A

WWW- World Wide Web- Hold HTML pages- use TCP

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15
Q

Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services, or any resource connected to the Internet or a private network.

A

DNS- Domain Naming Service- Translates names to destination IP addresses- uses TCP or UDP

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16
Q

Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.

A

DHCP- Dynamic Host Configuration protocol- To assign source IP addresses- uses UDP

17
Q

FTP (File Transfer Protocol) is a network protocol for transmitting files between computers over Transmission Control Protocol/Internet Protocol (TCP/IP) connections. Within the TCP/IP suite, FTP is considered an application layer protocol. … It is also sometimes used to download new applications via web browsers.

A

FTP- File Transfer Protocol- To upload or download files- uses TCP

17
Q
A

FTP- File Transfer Protocol- To upload or download files- uses TCP

18
Q

Trivial File Transfer Protocol is a simple lockstep File Transfer Protocol which allows a client to get a file from or put a file onto a remote host. One of its primary uses is in the early stages of nodes booting from a local area network.

A

TFTP- Trivial File Transfer Protocol- Same as FTP, but less secure and faster- uses UDP

19
Q

The Session Initiation Protocol is a signaling protocol used for initiating, maintaining, and terminating real-time sessions that include voice, video and messaging applications.

A

SIP- Session Initiation Protocol- to set up two IP connections- uses UDP

20
Q

The Transmission Control Protocol is one of the main protocols of the Internet protocol suite. It originated in the initial network implementation in which it complemented the Internet Protocol. Therefore, the entire suite is commonly referred to as TCP/IP.

A

TCP- Transmission Control Protocol- reliable, connection oriented, flow control

21
Q

In computer networking, the User Datagram Protocol is one of the core members of the Internet protocol suite. With UDP, computer applications can send messages, in this case referred to as datagrams, to other hosts on an Internet Protocol network.

A

UDP – User Datagram Protocol- unreliable, connectionless, no flow control

22
Q

The Internet Protocol is the network layer communications protocol in the Internet protocol suite for relaying datagrams across network boundaries. Its routing function enables internetworking, and essentially establishes the Internet

A

IP- Internet Protocol

23
Q

A radio frequency (RF) signal refers to a wireless electromagnetic signal used as a form of communication, if one is discussing wireless electronics. Radio waves are a form of electromagnetic radiation with identified radio frequencies that range from 3kHz to 300 GHz.

A

RF- Radio frequency

24
Q

In computing, bandwidth is the maximum rate of data transfer across a given path. Bandwidth may be characterized as network bandwidth, data bandwidth, or digital bandwidth.

A

Bandwidth- The theoretical data rate measured in bps (bits per second)

25
Q

In general terms, throughput is the rate of production or the rate at which something is processed. When used in the context of communication networks, such as Ethernet or packet radio, throughput or network throughput is the rate of successful message delivery over a communication channel.

A

Throughput- The actual data rate

26
Q

The bit is the most basic unit of information in computing and digital communications. The name is a contraction of binary digit. The bit represents a logical state with one of two possible values.

A

Bit- value of 1 or 0 (1 = 5 volts, 0 = 0 volts)

27
Q

The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures.

A

Byte – 8 bits

28
Q

A router is a networking device that forwards data packets between computer networks. Routers perform the traffic directing functions on the Internet. Data sent through the internet, such as a web page or email, is in the form of data packets.

A

Router- layer 3 device- used in a WAN to connect LANs in different geographic areas

29
Q

A network switch is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device. A network switch is a multiport network bridge that uses MAC addresses to forward data at the data link layer of the OSI model.

A

Switch- Layer 2 device- used in a LAN to connect hosts in a LAN

30
Q

An Ethernet hub, active hub, network hub, repeater hub, multiport repeater, or simply hub is a network hardware device for connecting multiple Ethernet devices together and making them act as a single network segment.

A

Hub- Layer 1 device- used to connect hosts in a LAN (more devices connected lower overall
performance)

31
Q

In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction.

A

Repeater- Layer 1 device used to amplify or regenerate a signal, so it can travel further