Card 201
Question
RAID 6
Answer
Disk striping with parity.
RAID-6 uses four or more disks and provides fault tolerance.
It can survive the failure of two drives.
Security+ Abkürzungen (CompTIA) mit Erklärungen
Discover Security+ Abkürzungen (CompTIA) mit Erklärungen: 302 flashcards with questions and answers.
- Subject
- Sciences / Computer science
- Language of creation
- English
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Cards in this set
Card 202
Question
RAM
Answer
Random access memory.
olatile memory within a computer that holds active processes, data, and applications.
Data in RAM is lost when the computer is turned off.
Memory forensics analyzes data in RAM.
Card 203
Question
RAS
Answer
Remote Access Service.
Provides access to an internal network from an outside source location using dial-up or a VPN.
Card 204
Question
RAT
Answer
Remote Administration Tool.
Sometimes referred to as Remote Access Trojan
Commonly used by APTs and other attackers.
A RAT gives an attacker full control over a user’s system from a remote location over the Internet.
Card 205
Question
RC
Answer
Ron’s Code or Rivest’s Cipher.
Symmetric encryption algorithm that includes versions RC2, RC4, RC5, and RC6.
RC4 is a stream cipher, and RC5 and RC6 are block ciphers.
Card 206
Question
RC4
Answer
Rivest Cipher 4.
A popular stream cipher.
RC4 was implemented incorrectly in WEP, causing vulnerabilities.
A rare spelling for RC4 is RSA Variable Key Size Encryption Algorithm.
Card 207
Question
RDP
Answer
Remote Desktop Protocol.
Used to connect to remote systems. Microsoft uses RDP in different services such as Remote Desktop Services and Remote Assistance.
RDP uses either port TCP 3389 or UDP 3389.
Card 208
Question
RFI
Answer
Radio frequency interference.
Interference from RF sources such as AM or FM transmitters.
RFI can be filtered to prevent data interference, and cables can be shielded to protect signals from RFI.
Card 209
Question
RFID
Answer
Radio frequency identification.
RFID methods are often used for inventory control.
Card 210
Question
RIPEMD
Answer
RACE Integrity Primitives Evaluation Message Digest.
A hash function used for integrity.
It creates fixed-length hashes of 128, 160, 256, or 320 bits.
Card 211
Question
ROI
Answer
Return of investment or return on investment.
A performance measure used to identify when an investment provides a positive benefit to the investor.
It is sometimes considered when evaluating the purchase of new security controls.
Card 212
Question
Role-BAC
Answer
Role-based access control.
An access control model that uses roles based on jobs and functions to define access and it is often implemented with groups (providing group-based
privileges).
Often uses a matrix as a planning document to match roles with the required privileges.
Card 213
Question
RPO
Answer
Recovery point objective.
The recovery point objective (RPO) refers to the amount of data you can afford to lose by identifying a point in time where data loss is acceptable.
It is related to RTO and the BIA often includes both RTOs and RPOs.
Card 214
Question
RSA
Answer
Rivest, Shamir, and Adleman.
An asymmetric algorithm used to encrypt data and digitally sign transmissions.
It is named after its creators, Rivest, Shamir, and Adleman.
RSA uses both a public key and a private key in a matched pair.
Card 215
Question
RSTP
Answer
Rapid Spanning Tree Protocol.
An improvement over STP.
STP and RSTP protocols are enabled on most switches and protect against switching loops, such as those caused when two ports
of a switch are connected together.
Card 216
Question
RTO
Answer
Recovery time objective.
An RTO identifies the maximum amount of time it should take to restore a system after an outage.
It is derived from the maximum allowable outage time identified in the BIA.
Card 217
Question
RTP
Answer
Real-time Transport Protocol.
A standard used for delivering audio and video over an IP network.
Card 218
Question
Rule-BAC
Answer
Rule-based access control.
An access control model that uses rules to define access.
Rule-based access control is based on a set of approved instructions, such as an access control list, or rules that trigger in response to an event such as modifying ACLs after detecting an attack.
Card 219
Question
S/MIME
Answer
Secure/Multipurpose Internet Mail Extensions.
Used to secure email.
S/MIME provides confidentiality, integrity, authentication, and non-repudiation.
It can digitally sign and encrypt email,
including the encryption of email at rest and in transit.
It uses RSA, with public and private keys for
encryption and decryption, and depends on a PKI for certificates.
Card 220
Question
SaaS
Answer
Software as a Service.
A cloud computing technology that provides applications over the Internet.
Web mail is an example of a cloud-based technology.
Compare to IaaS and PaaS.
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