Day 5 Reversed

Question 1

DSA

Answer 1

Digital Signature Algorithm

An algorithm created by the NSA to implement non-repudiation.

Question 2

DSL

Answer 2

Digital Subscriber Line

High-speed Internet conductivity based upon existing infrastructure for telephones.

Question 3

EAP

Answer 3

Extensible Authentication Protocol

A derivative of PPP used by wired and wireless networks to validate connections.

Question 4

ECB

Answer 4

Electronic Code Book

A mode of symmetric encryption that divides the message into each block and encrypts them separately.

Question 5

ECC

Answer 5

Elliptic Curve Cryptography

An algorithm commonly used for key exchange that relies upon geometric complexities.

Question 6

ECDHE

Answer 6

Elliptic Curve Diffie-Hellman Ephemeral

Used to negotiate a temporary shared secret using a public and private key.

Question 7

ECDSA

Answer 7

Elliptic Curve Digital Signature Algorithm

This signing technique employs the complexities of geometry, instead of factoring prime numbers.

Question 8

EDR

Answer 8

Endpoint Detection and Response

An intranet technology designed to protect access to the infrastructure, identify threats and quarantine known offenders.

Question 9

EF

Answer 9

Exposure Factor

Typically referenced as a percentage value indicating value lost from one attack.

Question 10

EFS

Answer 10

Encrypted File System

A cryptosystem built into Microsoft that allows selective encryption.

Question 11

EIP

Answer 11

Extended Instruction Pointer

A programming concept that points an application to the bottom or next step in execution.

Question 12

EMI

Answer 12

Electromagnetic Interference

Typically associated with accidental radiation of signals that interfere with IT systems.

Question 13

EMP

Answer 13

Electro Magnetic Pulse

Large and significant discharge of signals that can create a denial of service in transmission and storage.

Question 14

EOL

Answer 14

End of Life

This term identifies when a product has reached the end of its useful life according to the vendor.

Question 15

EOSL

Answer 15

End of Service Life

This term identifies when a product has reached the end of its useful life and is no longer patched or fixed or maintained.

Question 16

ERP

Answer 16

Enterprise Resource Planning

Business process management integrated into multiple aspects of an organization, IT Services, and Human Resources.

Question 17

ESP

Answer 17

Encapsulated Security Payload

A header used in IPSEC to create confidentiality.

Question 18

ESN

Answer 18

Electronic Serial Number

An identifying number created by the Federal Communications Commission to uniquely identify mobile devices and radios.

Question 19

FACL

Answer 19

File System Access Control List

This is creating filters or restrictions on disk storage.

Question 20

FAR

Answer 20

False Acceptance Rate

When biometrics malfunction, incorrectly granting permissions.

Question 21

FDE

Answer 21

Full Disk Encryption

Enforcing confidentiality across the entire storage device.

Question 22

FIM

Answer 22

File Integrity Monitoring

A defensive control designed to assess or validate the integrity of files, such as Tripwire.

Question 23

FPGA

Answer 23

Field Programmable Gate Array

An integrated circuit or chip that may be revised or configured after manufacture.

Question 24

FRR

Answer 24

False Rejection Rate

A biometric measurement, indicating the rate at which authorized personnel are forbidden access.

Question 25

FTP

Answer 25

File Transfer Protocol

A file management application designed to insecurely upload and download files.

Question 26

FTPS

Answer 26

File transfer Protocol - Secure

A relative of HTTPS implemented in the same way with certificates and key exchange.

Question 27

Full BU

Answer 27

Full Backup

It moves files to alternative media that regardless of whether the archive bit is set, and then it clears it.