Network+ Guide to Networks - Chapter 14

40 terms by summeranne Plus

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True

T/F: Protection against harmful code involves more than just installing anti-malware software.

True

T/F: When implementing anti-malware software on a network, one of your most important decisions is where to install the software.

True

T/F: An anti-malware policy is meant to protect the network from damage and downtime.

False

T/F: The goal of fault-tolerant systems is to prevent failures from progressing to faults.

False

T/F: Generators provide surge protection.

redundancy

____ is intended to eliminate single points of failure.

trojan horse

A program that disguises itself as something useful but actually harms your system is called a ____.

worms

____ are programs that run independently and travel between computers and across networks.

bot

A ____ is a program that runs automatically, without requiring a person to start or stop it.

stealth

A(n) ____ virus disguises itself as a legitimate program to prevent detection.

polymorphic

A(n) ____ virus changes its characteristics every time it is transferred to a new system.

signature

____ scanning detects malware by comparing a file's content with known malware signatures in a signature database.

integrity checking

____ detects malware by comparing current characteristics of files and disks against an archived version of these characteristics to discover any changes.

heuristic

____ scanning techniques attempt to identify malware by discovering "malware-like" behavior.

failure

A(n) ____ is a deviation from a specified level of system performance for a given period of time.

clean

Power that is free from noise is called "____" power.

online

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.

SONET ring

Mesh topologies and ____ topologies are good choices for highly available enterprise networks.

load balancing

____ is an automatic distribution of traffic over multiple links or processors to optimize response.

RAID level 0

Which RAID offers the best performance.

RAID level 1

Which RAID provides redundancy through a process called disk mirroring.

RAID level 3

In which RAID does parity error checking occur when data is written across the disk array.

NAS

____ is a specialized storage device or group of storage devices that provides centralized fault-tolerant data storage for a network.

SANs

____ are distinct networks of storage devices that communicate directly with each other and with other networks.

optical media

____ 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.

bit

An archive ____ is a file attribute that can be checked or unchecked to indicate whether the file must be archived.

IRC

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.

UPS

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.

RAID

__________ refers to a collection of disks that provide fault tolerance for shared data and applications.

backup

A(n) ____________________ is a copy of data or program files created for archiving or safekeeping.

disaster recovery

____ 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.

surge

A momentary increase in voltage due to lightning strikes, solar flares, or electrical problems.

blackout

A complete power loss.

availability

Refers to how consistently and reliably a file or system can be accessed by authorized personnel.

hot site

A place where the computers, devices, and connectivity necessary to rebuild a network exist, and all are appropriately configured, updated, and connected to match your network's current state.

warm site

A place where the computers, devices, and connectivity necessary to rebuild a network exist, with some appropriately configured, updated, or connected.

cold site

A place where the computers, devices, and connectivity necessary to rebuild a network exist, but they are not appropriately configured, updated, or connected.

noise

Fluctuation in voltage levels caused by other devices on the network or electromagnetic interference.

integrity

Refers to the soundness of a network's programs, data, services, devices, and connections.

brownout

A momentary decrease in voltage.

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