ITEC 200 Final Exam Questions And Answers Well Defined Solutions.

What is a shell in the context of a Linux system? - correct answer A shell is a command line interpreter that provides a user interface for interaction with the operating system. In Linux, what is the process with PID 1? - correct answer The process with PID 1 is typically the init process or systemd on newer systems. It is the first process that runs on the system and is responsible for starting all other processes. What is a daemon process in Linux? - correct answer A daemon process in Linux is a background process that is not directly controlled by the user and typically provides a service such as handling requests for network resources. What command can be used to view the status of a unit in systemd? - correct answer The command systemctl status can be used to view the status of a systemd unit. Which service in Linux is primarily responsible for sorting and organizing syslog messages into /var/log? - correct answer The rsyslog service is primarily responsible for this task. Which syslog severity level is considered to have the highest priority? - correct answer The emerg severity level is considered to have the highest priority. Where does a Linux system initially retrieve its system time when it starts up? - correct answer Initially, the system time is retrieved from the hardware clock on the system motherboard. What command would you use in Red Hat Enterprise Linux 8 to set the local time zone? - correct answer The timedatectl command is recommended for setting the local time zone. How many bits are there in an IPv4 address? - correct answer There are 32 bits in an IPv4 address. What term determines how many leading bits in the IP address contribute to the network address? - correct answer The term is called a netmask. How many bits are there in an IPv6 address? - correct answer There are 128 bits in an IPv6 address. What is the network address of 192.168.1.107/24? - correct answer The network address is 192.168.1.0. What is the broadcast address of 10.1.1.18/8? - correct answer The broadcast address is 10.255.255.255. Which device is used to connect networks to form the Internet? - correct answer Routers are used to connect networks to form the Internet. In yum, which module component allows you to work with different versions side by side? - correct answer The application stream allows you to work with different versions side by side. Does the yum command allow you to install, update, remove, and get information about software packages and their dependencies? - correct answer True, the yum command allows all of these operations. What yum command would you use to install the GNU C Compiler (gcc) package? - correct answer The command yum install gcc would install the gcc package. Which yum command generates a list of available updates for all installed packages on a Linux system? - correct answer The command yum list updates generates a list of available updates. What tasks can be performed with Red Hat Subscription Management tools? - correct answer he tasks that can be performed include system registration, system subscription, repository enabling, and entitlement reviewing. What does the tar command allow you to do? - correct answer rThe tar command allows you to create archives, list the contents of archives, extract archives, and compress and uncompress archives. What is the name of the device file for an entire SATA hard drive in the /dev directory? - correct answer The name of the device file for an entire SATA hard drive is typically /dev/sda. What is the device file name of the third partition on the second SATA hard drive? - correct answer The device file name would be /dev/sdb3. Which of the following are advantages of using the find command? - correct answer The find command can search by file attribute types and its results are always the most up-to-date. By default, in what block size does the df command display file system use? - correct answer By default, the df command displays file system use in 1-K block size. What is a signal in Linux? - correct answer A signal is a technique to tell a process to take some sort of action. What is a mount point in Linux? - correct answerA mount point is an empty directory that is used to access a file system. Which command searches for files using a database, which is generated on demand or scheduled? - correct answerThe locate command searches for files using a database. What does the Linux command hwclock do? - correct answer The hwclock command allows you to query and set the hardware clock, also known as the Real Time Clock (RTC), on a Linux system. What command would you use to install an update for all installed packages on a Linux system? - correct answer The command yum update would install updates for all installed packages. What does a netmask of /24 signify in an IP address? - correct answer A netmask of /24 signifies that the first 24 bits of the IP address are used for the network This command is used for listing current processes. It can provide detailed process information, including: User identification (UID), which determines process privileges Unique process identification (PID) CPU and real time already expended How much memory the process has allocated in various locations The location of process stdout, known as the controlling terminal The current process state - correct answerps command This program is a dynamic view of the system's processes, displaying a summary header followed by a process or thread list similar to ps information. Unlike the static ps output, this continuously refreshes at a configurable interval, and provides capabilities for column reordering, sorting, and highlighting. User configurations can be saved and made persistent. - correct answertop program/command This command is one way to display the current load average. It prints the current time, how long the machine has been up, how many user sessions are running, and the current load average. - correct answeruptime command Name for Linux process state which is signified by R; The process is either executing on a CPU or waiting to run. Process can be executing user routines or kernel routines (system calls), or be queued and ready when in this state - correct answerRunning/ TASK_RUNNING Name for Linux process state which is signified by S; The process is waiting for some condition: a hardware request, system resource access, or signal. When an event or signal satisfies the condition, the process returns to Running. - correct answerSleeping/TASK_INTERRUPTIBLE Name for Linux process state which is signified by D; This process is also Sleeping, but unlike S state, does not respond to signals. Used only when process interruption may cause an unpredictable device state. - correct answerSleeping/TASK_UNINTERRUPTIBLE Name for Linux process state which is signified by K; Identical to the uninterruptible D state, but modified to allow a waiting task to respond to the signal that it should be killed (exit completely). Utilities frequently display these processes as D state. - correct answerSleeping/TASK_KILLABLE Name for Linux process state which is signified by I; A subset of state D. The kernel does not count these