NOS 120 LINUX/UNIX Single User Midterm Review UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Linux Kernel The core, central program of the operating system
hardware (via device driver) The Linux Kernel is responsible for controlling the computers what?
, Major number, minor number, revision number Linux kernel versions are made up of the following three components
Production kernel A Linux kernel whose minor number (the number after the dot in the version
number) is even, therefore deemed stable for use through widespread testing
Developmental kernel Not fully tested and imply instability. They are tested for vulnerabilities by people
who develop Linux software.
Freeware Closed source software that is given out free of charge; it is sometimes referred
to as freemium software.
Shareware Closed source software that is initially given out free of charge but that requires
payment after a certain period of use.
Linux Advantages Risk reduction, meeting business needs, stability and security, flexibility for
different hardware platforms, ease of customization, ease of obtaining support,
and cost reduction
X Windows The core component of the GUI in Linux is referred to as
GNU Network Object Model Environment (GNOME) and Two main competing GUI environments available in Linux are the
the K Desktop Environment (KDE)
Package manager A software system that installs and maintains software. It keeps track of installed
software, requires a standard format and documentation, and can manage and
remove software from a system by recording all relevant software information in a
central software database on your computer.
Tarball This is a compressed archive of files, usually containing scripts that install the
software contents to the correct location on the system, or source code that can
be compiled into a working program and copied to the system.
DNS server Maintains a list of the proper FQDN to IP mappings, and quickly returns the
requested IP address to your browser.
Network Time Protocol (NTP) A protocol that is used to obtain time and time zone information from servers
across a network, such as the Internet.
File Transfer Protocol (FTP) The most common and efficient method for transferring files over the internet.
Asymmetric encryption This uses a pair of keys that are uniquely generated on each system: a public and a
private key.
Certification Authority (CA) To prevent hijacking, nearly all public keys are digitally signed by a trusted third
party computer called a
Security appliances organizations use specialized server hardware running Linux that may provide
routing, firewall, and proxy services alongside additional advanced security
services. These servers are called _______ and are used to provide security
between an organization's network and the Internet.
QUESTIONS AND CORRECT ANSWERS
Linux Kernel The core, central program of the operating system
hardware (via device driver) The Linux Kernel is responsible for controlling the computers what?
, Major number, minor number, revision number Linux kernel versions are made up of the following three components
Production kernel A Linux kernel whose minor number (the number after the dot in the version
number) is even, therefore deemed stable for use through widespread testing
Developmental kernel Not fully tested and imply instability. They are tested for vulnerabilities by people
who develop Linux software.
Freeware Closed source software that is given out free of charge; it is sometimes referred
to as freemium software.
Shareware Closed source software that is initially given out free of charge but that requires
payment after a certain period of use.
Linux Advantages Risk reduction, meeting business needs, stability and security, flexibility for
different hardware platforms, ease of customization, ease of obtaining support,
and cost reduction
X Windows The core component of the GUI in Linux is referred to as
GNU Network Object Model Environment (GNOME) and Two main competing GUI environments available in Linux are the
the K Desktop Environment (KDE)
Package manager A software system that installs and maintains software. It keeps track of installed
software, requires a standard format and documentation, and can manage and
remove software from a system by recording all relevant software information in a
central software database on your computer.
Tarball This is a compressed archive of files, usually containing scripts that install the
software contents to the correct location on the system, or source code that can
be compiled into a working program and copied to the system.
DNS server Maintains a list of the proper FQDN to IP mappings, and quickly returns the
requested IP address to your browser.
Network Time Protocol (NTP) A protocol that is used to obtain time and time zone information from servers
across a network, such as the Internet.
File Transfer Protocol (FTP) The most common and efficient method for transferring files over the internet.
Asymmetric encryption This uses a pair of keys that are uniquely generated on each system: a public and a
private key.
Certification Authority (CA) To prevent hijacking, nearly all public keys are digitally signed by a trusted third
party computer called a
Security appliances organizations use specialized server hardware running Linux that may provide
routing, firewall, and proxy services alongside additional advanced security
services. These servers are called _______ and are used to provide security
between an organization's network and the Internet.
