Card 241
Question
SMTP
Answer
Simple Mail Transfer Protocol.
Used to transfer email between clients and servers and between email servers and other email servers.
SMTP uses TCP port 25.
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 242
Question
SNMP
Answer
Simple Network Management Protocol.
Used to manage and monitor network devices such as routers or switches.
SNMP agents report information via notifications known as SNMP traps, or
SNMP device traps.
SNMP uses UDP ports 161 and 162.
Current and secure version = SNMPv3
Card 243
Question
SONET
Answer
Synchronous Optical Network Technologies.
A multiplexing protocol used to transfer data
over fiber-optic cable.
Card 244
Question
SPIM
Answer
Spam over Instant Messaging.
A form of spam using instant messaging that targets instant messaging users.
Card 245
Question
SPOF
Answer
Single point of failure.
An SPOF is any component whose failure results in the failure of an entire system.
Elements such as RAID, failover clustering, UPS, and generators remove many single
points of failure.
Card 246
Question
SQL
Answer
Structured Query Language.
Used by SQL-based databases, such as Microsoft SQL Server.
Web sites integrated with a SQL database are subject to SQL injection attacks.
Input validation with forms and stored procedures help prevent SQL injection attacks
Microsoft SQL Server uses TCP port 1433 by default.
Card 247
Question
SSD
Answer
Solid State Drive.
A drive used in place of a traditional hard drive.
An SSD has no moving parts, but instead stores the contents as nonvolatile memory.
SSDs are much quicker than traditional
drives.
Card 248
Question
SSH
Answer
Secure Shell.
SSH encrypts a wide variety of traffic such as SCP, SFTP, Telnet, and TCP Wrappers. SSH uses TCP port 22.
SSH is a more secure alternative than Telnet.
Card 249
Question
SSID
Answer
Service Set Identifier.
Identifies the name of a wireless network.
Disabling SSID broadcast can hide the network from casual users, but an attacker can easily discover it with a wireless sniffer.
It’s recommended to change the SSID from the default name.
Card 250
Question
SSL
Answer
Secure Sockets Layer.
Used to encrypt data in transit with the use of certificates.
SSL is used with HTTPS to encrypt HTTP traffic and can also encrypt SMTP and LDAP traffic.
Card 251
Question
SSO
Answer
Single sign-on.
Authentication method where users can access multiple resources on a network using a single account.
SSO can provide central authentication against a federated database for different operating systems.
Card 252
Question
SSTP
Answer
Secure Socket Tunneling Protocol.
A tunneling protocol that encrypts VPN traffic using SSL over TCP port 443.
Card 253
Question
STP
Answer
Shielded twisted-pair.
Cable type used in networks that includes shielding to prevent interference from EMI and RFI.
It can also prevent data from emanating outside the cable.
Card 254
Question
STP
Answer
Spanning Tree Protocol.
Protocol enabled on most switches that protects against switching loops.
A switching loop can be caused if two ports of a switch are connected together.
Card 255
Question
SYN
Answer
Synchronize.
The first packet in a TCP handshake.
In a SYN flood attack, attackers send this packet, but don’t complete the handshake after receiving the SYN/ACK packet.
A flood guard is a logical control that protects against SYN flood attacks.
Card 256
Question
TACACS+
Answer
Terminal Access Controller Access-Control System+.
Provides central authentication for remote access clients and used as an alternative to RADIUS.
TACACS+ uses TCP port 49.
It encrypts the entire authentication process, compared with RADIUS, which only encrypts the password.
It uses multiple challenges and responses.
Card 257
Question
TCO
Answer
Total cost of ownership.
A factor considered when purchasing new products and services.
TCO attempts to identify the cost of a product or service over its lifetime.
Card 258
Question
TCP
Answer
Transmission Control Protocol.
Provides guaranteed delivery of IP traffic using a three-way handshake.
Card 259
Question
TCP/IP
Answer
Transmission Control Protocol/Internet Protocol.
Represents the full suite of protocols used on the Internet and most internal networks.
Card 260
Question
TFTP
Answer
Trivial File Transfer Protocol.
Used to transfer small amounts of data with UDP port 69.
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