Card 161
Question
NOS
Answer
Network Operating System.
Software that runs on a server and enables the server to manage resources on a network.
Security+ Abkürzungen (CompTIA) mit Erklärungen
Discover Security+ Abkürzungen (CompTIA) mit Erklärungen: 302 flashcards with questions and answers.
- Subject
- Sciences / Computer science
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- English
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Card 162
Question
NoSQL
Answer
Not only Structured Query Language.
An alternative to traditional SQL databases.
NoSQL databases use unstructured query language queries instead of traditional SQL queries.
Card 163
Question
NTFS
Answer
NT File System.
A file system used in Microsoft operating systems that provides security.
NTFS uses the DAC model.
Card 164
Question
NTLM
Answer
New Technology LANMAN.
Authentication protocol intended to improve LANMAN.
The LANMAN protocol stores passwords using a hash of the password by first dividing the password into two 7-character blocks, and then converting all lowercase letters to uppercase.
This makes LANMAN easy to crack.
NTLM stores passwords in LANMAN format for backward compatibility, unless the passwords are greater than 15 characters. NTLMv1 is older and has known vulnerabilities.
NTLMv2 is newer and secure.
Card 165
Question
NTP
Answer
Network Time Protocol.
Protocol used to synchronize computer times.
Uses UDP Port 123
Card 166
Question
OCSP
Answer
Online Certificate Status Protocol.
An alternative to using a CRL.
It allows entities to query a CA with the serial number of a certificate. The CA answers with good, revoked, or unknown.
Card 167
Question
OLA
Answer
Open License Agreement.
A volume licensing agreement allowing an organization to install software on multiple systems.
Card 168
Question
OS
Answer
Operating system.
Includes Windows, Linux, and Apple iOS systems.
OSs are hardened to make them more secure from their default installation.
Card 169
Question
OSI
Answer
Open Systems Interconnection.
The OSI reference model conceptually divides different networking requirements into seven separate layers.
Card 170
Question
OVAL
Answer
Open Vulnerability Assessment Language.
International standard proposed for vulnerability assessment scanners to follow.
Card 171
Question
P2P
Answer
Peer-to-peer.
P2P applications allow users to share files such as music, video, and data over the Internet.
Data leakage occurs when users install P2P software and unintentionally share files.
Organizations often block P2P software at the firewall.
Card 172
Question
PaaS
Answer
Platform as a Service.
A cloud computing technology that provides cloud customers with a preconfigured computing platform they can use as needed.
PaaS is a fully managed platform, meaning
that the vendor keeps the platform up to date with current patches.
Compare to IaaS and SaaS.
Card 173
Question
PAC
Answer
Proxy Auto Configuration.
Method used to automatically configure systems to use a proxy server.
Card 174
Question
PAM
Answer
Pluggable Authentication Modules.
A library of APIs used for authentication-related services.
Card 175
Question
PAN
Answer
Personal area network.
A network of devices close to a single person.
Card 176
Question
PAP
Answer
Password Authentication Protocol.
An older authentication protocol where passwords or PINs are sent across the network in cleartext.
CHAP is more secure.
PAP uses PPP.
Card 177
Question
PAT
Answer
Port Address Translation.
A form of NAT that translates public IP addresses to private IP addresses, and private IP addresses back to public IP addresses.
PAT uses a single public IP address.
Compare to DNAT.
Card 178
Question
PBKDF2
Answer
Password-Based Key Derivation Function 2.
A key stretching technique that adds
additional bits to a password as a salt.
This method helps prevent brute force and rainbow table attacks.
Bcrypt is a similar key stretching technique.
Card 179
Question
PBX
Answer
Private Branch Exchange.
A telephone switch used with telephone calls.
Card 180
Question
PCAP
Answer
Packet Capture.
A file that contains packets captured from a protocol analyzer or sniffer.
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