Glossary- V

Question 1

V.35

Answer 1

A standard protocol for sending serial data between computers.

Question 2

variable sampling

Answer 2

A sampling technique used to study the characteristics of a popu- lation to determine the numeric total of a specific attribute from the entire population. See also sampling.

Question 3

vendor standard

Answer 3

A standard that specifies which suppliers and vendors are used for various types of products and services.

Question 4

version control

Answer 4

The techniques and tools used to manage different versions of source code files.

Question 5

video surveillance

Answer 5

The use of video cameras, monitors, and recording systems to re- cord the movement of persons in or near sensitive areas.

Question 6

virtual circuit

Answer 6

A logical communications channel between two endpoints on a packet- switched network.

Question 7

virtual machine

Answer 7

A software implementation of a computer, usually an operating sys- tem or other program running within a hypervisor. See also hypervisor.

Question 8

virtual network (VLAN)

Answer 8

A logical network that may share a physical medium with one or more other virtual networks.

Question 9

virtual private network (VPN)

Answer 9

Any network encapsulation protocol that utilizes au- thentication and encryption; used primarily for protecting remote access traffic and for protecting traffic between two networks. See also tunneling, encapsulation.

Question 10

virtual server

Answer 10

An active instantiation of a server operating system, running on a sys- tem that is designed to house two or more such virtual servers. Each virtual server is logically partitioned from every other so that each runs as though it were on its own physically separate machine.

Question 11

virus

Answer 11

A type of malware where fragments of code attach themselves to executable programs and are activated when the program they are attached to is run.

Question 12

visual notice

Answer 12

A sign or symbol that is used to inform personnel of security controls and/or to warn unauthorized persons.

Question 13

Voice over IP (VoIP)

Answer 13

Several technologies that permit telephony that is transported over IP networks.

Question 14

VoIP client

Answer 14

A computer program designed to communicate using the Voice over IP (VoIP) protocol. See also Voice over IP (VoIP).

Question 15

VoIP handset

Answer 15

A digital telephone designed to communicate using the Voice over IP (VoIP) protocol. See also Voice over IP (VoIP).

Question 16

vulnerability

Answer 16

A weakness that may be present in a system that makes the probability of one or more threats more likely.

Question 17

vulnerability management

Answer 17

A formal business process that is used to identify and mitigate vulnerabilities in an IT environment.