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Flashcards in 800 Deck (100)
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1

Layer 1 of the OSI Model

Application

2

Layer 2 of the OSI Model

Presentation

3

Layer 3 of the OSI Model

Session

4

Layer 4 of the OSI Model

Transport

5

Layer 5 of the OSI Model

Network

6

Layer 6 of the OSI Model

Data Link

7

Layer 7 of the OSI Model

Physical

8

A network database that contains a listing of all network resources - such as users - printers - groups - and so on.

directory

9

A network service that provides access to a central database of information - which contains detailed information about the resources available on a network.

directory service

10

A method of communication between wireless receivers.

direct-sequence (DS)

11

A communications technology that is used to communicate in the 802.11 standard. It accomplishes communication by adding the data that is to be transmitted to a higher-speed transmission

direct-sequence spread spectrum (DSSS)

12

The act of recovering data following a disaster that has destroyed the data.

disaster recovery

13

The procedure by which data is recovered after a disaster.

disaster recovery plan

14

A means of restricting access to objects based on the identity of subjects and/or groups to which they belong.

Discretionary Access Control (DAC)

15

Technology that keeps identical copies of data on two disks to prevent the loss of data if one disk faults.

disk mirroring

16

Technology that enables writing data to multiple disks simultaneously in small portions called stripes.

disk striping

17

A fault-tolerance solution of writing data across a number of disks and recording the parity on another. In the event any one disk fails - the data on it can be recreated by looking at the remaining data and computing parity to figure out the missing data.

disk striping with parity

18

A derivative of a DoS attack in which multiple hosts in multiple locations all focus on one target.

Distributed Denial of Service (DDoS) attack

19

Any server that performs host name-to-IP address resolution.

DNS server

20

An area in the DNS hierarchy that is managed as a single unit.

DNS zone

21

Within the Internet - this is a group of computers with shared traits and a common IP address set.

domain

22

The network service used in TCP/IP networks that translates host names to IP addresses.

Domain Name Service (DNS)

23

A host that resides on more than one network and posses more than one physical network card.

dual-homed host

24

A keyboard and monitor that send keystrokes to a central processing computer (typically a mainframe or minicomputer) that returns screen displays to the monitor. The unit has no processing power of its own.

dumb terminal

25

Looking through trash for clues--often in the form of paper scraps--to users' passwords and other pertinent information.

dumpster diving

26

Two hard drives to which identical information is written simultaneously. A dedicated controller card controls each drive. Used for fault tolerance.

duplexed hard drives

27

Two servers that are identical - for use in clustering.

duplicate servers

28

A protocol used on a TCP/IP network to send client configuration data - including TCP/IP address - default gateway - subnet mask - and DNS configuration - to clients.

Dynamic Host Configuration Protocol (DHCP)

29

A type of firewall used to accept or reject packets based on their contents.

dynamic packet filtering

30

The use of route-discovery protocols to talk to other routers and find out what networks they are attached to. Routers that use dynamic routing send out special packets to request updates from the other routers on the network as well as to send their own updates.

dynamic routing