demilitarized zone
Explanation:
A demilitarized zone (DMZ) is a physical or logical subnetwork that contains and exposes external services of
an organization to a larger network, usually the Internet. The purpose of a DMZ is to add an additional layer of
security to an organization's Local Area Network (LAN); an external attacker only has access to equipment in
the DMZ, rather than the whole of the network. Hosts in the DMZ have limited connectivity to specific hosts in
the internal network, though communication with other hosts in the DMZ and to the external network is allowed.
This allows hosts in the DMZ to provide services to both the internal and external networks, while an
intervening firewall controls the traffic between the DMZ servers and the internal network clients. In a DMZ
configuration, most computers on the LAN run behind a firewall connected to a public network such as the
Internet.

The LogLevel directive is used in server Error log of the Apache Web server log. This directive is used to control the types of errors that are sent to the error log by constraining the severity level. Eight different levels are present in the LogLevel directive, which are shown below in order of their descending significance:

Note: When a certain level is specified, the messages from all other levels of higher significance will also be reported. For example, when LogLevel crit is specified, then messages with log levels of alert and emerg will also be reported. Answer option B is incorrect. The ErrorLog directive is used to set the name and location of the file to which the server will log any errors it encounters. If the file-path does not begin with a slash sign (/), it is assumed to be relative to the ServerRoot. If the file-path begins with a pipe sign (|), then it is assumed to be a command that handles the error log. Answer option A is incorrect. The CustomLog directive is used to log requests to the server. The format of the log is specified and the logging can be made conditional on request characteristics with the help of environment variables. Environment variables can be adjusted on a per-request basis with the help of the mod_setenvif or mod_rewrite module. Answer option C is incorrect. The LogFormat directive can exist in one of the two forms. In the first form, only one argument is specified; and in the second form explicit format with a nickname is associated. This directive specifies the log format that is used by logs specified in subsequent TransferLog directives.

Emanation security is one of the types of computer security that deals with protection against spurious signals
emitted by electrical equipment in the system, such as electromagnetic emission (from displays), visible
emission (displays may be visible through windows), and audio emission (sounds from printers, etc). Answer
option D is incorrect. Hardware security helps in dealing with the vulnerabilities in the handling of hardware.
Answer option B is incorrect. Physical security helps in dealing with protection of computer hardware and
associated equipment.
Answer option A is incorrect. Communication security helps in dealing with the protection of data and
information during transmission.

rootkit
Explanation:
A rootkit is a set of tools that take Administrative control of a computer system without
authorization by the computer owners and/or legitimate managers. A rootkit requires root access
to be installed in the Linux operating system, but once installed, the attacker can get root access
at any time. Rootkits have the following features:
They allow an attacker to run packet sniffers secretly to capture passwords.
They allow an attacker to set a Trojan into the operating system and thus open a backdoor for
anytime access.
They allow an attacker to replace utility programs that can be used to detect the attacker's activity.
They provide utilities for installing Trojans with the same attributes as legitimate programs.

The responsibilities of the disaster recovery team are as follows: To develop, deploy, and monitor the
implementation of appropriate disaster recovery plans after analysis of business objectives and threats to
organizations
To notify management, affected personnel, and third parties about the disaster
To initiate the execution of the disaster recovery procedures
To monitor the execution of the disaster recovery plan and assess the results
To return operations to normal conditions
To modify and update the disaster recovery plan according to the lessons learned from previous disaster
recovery efforts
To increase the level of the organization's disaster recovery preparedness by conducting mock drills, regular
DR systems testing, and threat analysis to create awareness among various stakeholders of the organization
by conducting training and awareness sessions