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26 terms

Ch 14 ITNW

STUDY
PLAY
In ____, parity error checking occurs when data is written across the disk array.
RAID Level 3
____ provides redundancy through a process called disk mirroring.
RAID Level 1
A(n) ____________________ is a copy of data or program files created for archiving or safekeeping.
backup
____________________________________________________________ refers to a collection of disks that provide fault tolerance for shared data and applications.
RAID (Redundant Array of Independent [or Inexpensive] Disks)
____ is a specialized storage device or group of storage devices that provides centralized fault-tolerant data storage for a network.
NAS
____ is intended to eliminate single points of failure.
Redundancy
A(n) ____ UPS uses the A/C power from the wall outlet to continuously charge its battery, while providing power to a network device through its battery.
online
An archive ____ is a file attribute that can be checked or unchecked to indicate whether the file must be archived.
bit
A(n) ____ virus disguises itself as a legitimate program to prevent detection.
stealth
Power that is free from noise is called "____" power.
clean
____ is a type of media capable of storing digitized data and that uses a laser to write data to it and read data from it.
Optical media
A program that disguises itself as something useful but actually harms your system is called a ____.
Trojan horse
____ are programs that run independently and travel between computers and across networks.
Worms
____ scanning techniques attempt to identify malware by discovering "malware-like" behavior.
Heuristic
____ scanning detects malware by comparing a file's content with known malware signatures in a signature database.
Signature
A ____ is a program that runs automatically, without requiring a person to start or stop it.
bot
Mesh topologies and ____ topologies are good choices for highly available enterprise networks.
SONET rings
____ is an automatic distribution of traffic over multiple links or processors to optimize response.
Load balancing
A(n) ___________________________________ is a battery-operated power source directly attached to one or more devices and to a power supply (such as a wall outlet) that prevents undesired features of the wall outlet's A/C power from harming the device or interrupting its services.
UPS (uninterruptible power supply)
A(n) ____ virus changes its characteristics every time it is transferred to a new system.
polymorphic
____ detects malware by comparing current characteristics of files and disks against an archived version of these characteristics to discover any changes.
Integrity checking
A(n) ____ is a deviation from a specified level of system performance for a given period of time.
failure
____ offers the best performance.
RAID Level 0
____ are distinct networks of storage devices that communicate directly with each other and with other networks.
SANs
Many bots spread through the _________________________, a protocol that enables users running IRC client software to communicate instantly with other participants in a chat room on the Internet.
IRC (Internet Relay Chat)
____________________ is the process of restoring your critical functionality and data after an enterprise-wide outage that affects more than a single system or a limited group of users.
disaster recovery