Operating Systems, Users/Superusers, Windows/MacOS/Linux Flashcards
Which feature of Windows ultimate will ensure sensitive data is secure and allow encryption on the entire drive?
Bitlocker
With Windows Ultimate and Enterprise editions, as well as Windows 8 and 8.1, BitLocker, allows users to encrypt the entire drive protecting the data from loss or theft.
What’s the command line prompt to create a new directory in Windows?
There are two commands that do the same thing:
mkdir (make directory) and md
When installing a new operating system onto a laptop using a USB flash drive, what must be done before loading from the flash drive?
The boot sequence in system BIOS must be adjusted, making the USB the first device in the boot order.
When the system boots, it boots in the order listed in BIOS, so the thumb drive must be shown as the first device.
Wake-on-LAN
feature of the Network Interface Card allows for a powered down or sleeping PC to power on when a print job is received
When a PC is configured to use Wake-on-LAN, it will power on when a print job is being sent. There is a similar feature available for modems that allows the PC to be powered up when the modem determines a call is being received. This is Wake-On-Ring, often used when PCs are configured to receive faxes.
A company with a very small local area network has grown to the point where statically assigning IP addresses and other NIC parameters have become impossible to manage. What steps can a network administrator take to simplify the process of configuring network interface cards?
Incorporate a DHCP Server into the network.
A DHCP (Dynamic Host Configuration Protocol) server is used to automatically configure the parameters needed by a network interface card when a PC is first booted up. It provides central management of IP address allocation.
A client complains that his laptop is taking way too long to boot up. You suspect that he has numerous processes that are initiating during startup. What utility would you use to see which processes are being launched on a Windows 10 laptop?
task manager
The Task Manager utility has a Startup tab that displays the processes launched at startup and allows you to disable any process. The previous versions of Windows used MSConfig to complete this, but will now display a note instructing the user to open Task Manager instead.
Disk Cleanup
helps eliminate any temporary files from a hard drive
utility is used to delete temporary files from a hard drive. To perform Disk Cleanup, from Start, enter Disk Cleanup.
Marc is tasked with installing a Windows edition that is capable of handling 6 TB of RAM and four CPUs. Which edition would best suit his needs?
Pro for Workstations
While both the Enterprise and Pro for Workstations editions of Windows 10 support 6 TB of RAM, only the Pro for Workstations edition is capable of running four CPUs.
Sue finds that she is unable to connect to the Internet. She opens a command line prompt and enters ipconfig and determines that her IP address is 169.254.17.200, which is not on her network. What is a likely cause of the problem?
She is unable to connect to the DHCP Server.
Explanation:
When she powered on her computer, it should connect to the DHCP server to acquire an IP address. If the DHCP server is down, her system will assign itself an APIPA address in the range of 169.254.0.1 through 169.254.255.254, then sends a broadcast to ensure no other PC is currently using that address. Unfortunately, the address 169.254.17.200 that her system randomly chose is not on her network so she will not be able to communicate.
A user is constantly receiving error messages relating to the hard drive on his Windows workstation. What command-line utility would he use to verify the integrity of the drive?
The system tool used to verify disk integrity is chkdsk which is run from the system command prompt. When run with no parameters set, it will simply display the disk status, if the /r option is added to the command, chkdsk will locate bad sectors and attempt to recover lost data.
Domain access is not available with which Windows 10 OS edition?
Home edition
The Windows 10 Home edition is a functionally reduced version of the Windows OS and is designed for home and personal use. It does not offer domain access.
Pro, Pro for Workstations, and Enterprise all offer domain access.
What would likely be the issue if a person can print to their network printer but can’t connect to the internet?
The default gateway is down.
If the default gateway goes down, it would not affect the local area network so he would be able to print. However, if the default gateway went down, users would not be able to access the Internet.
What does the command netstat do?
used to display information about the current state of network connections. This is a helpful troubleshooting tool to aid any IT support team for a variety of issues, and certainly network issues in particular.
displays information about the IP address, port number, and connectivity state
What two commands will remove a directory in command line mode?
rd; rmdir
both mean (remove directory)
In the command line, you want to move back to the main directory after going down TWO directories. How would you do this?
Use “cd ../..”
The command CD (Change Directory) .. (two dots) means the directory above, so ../.. would move you up two directories.
What protocol would you use that would allow you to connect to remote user workstations to assist in the native OS interface?
RDP - Remote Desktop Protocol
RDP (Remote Desktop Protocol) provides the ability to remotely log in to computers to support remote users, among other uses. Once connected, this presents you with the same screen that a user would see on their end.
While you can connect to remote systems with Telnet and SSH, these options will only connect you to a command line or shell, not the default user interface of someone’s PC.
In Linux, what command do you enter to view a listing of the directory she is working on, as well as attributes of the files and any subdirectories?
ls -l
The command ls gives a listing of a directory (folder); the option -l gives a long listing, which includes attributes of files and folders.
What is the command that allows users to install new software packages on Debian-based Linux distributions?
The command apt-get allows a simple way to add new software packages to a Linux system.
Note: The latest research indicates that apt-get is not depreciated and is still used in operations like scripting.
In Windows OS, the net use command is used for -
displaying how drive letters are mapped to network shares
In Windows OS, the net user command is used to -
used for viewing user accounts on the OS. Lets you view all accounts on the host system.
In Linux, what command lets you create a new directory?
mkdir or md
(make directory)
While Windows may utilize both commands, Linux distributions only make use of the mkdir command to create new directories.
On Mac OS X, Time Machine does what?
When set, it will automatically perform backups hourly for a period of 24 hours.
Enabling Time Machine requires using an external storage media, such as an external hard drive or Time Capsule. When enabled, it will perform incremental or historical backups in this manner: hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for all previous months. It’s also important to note that the oldest backups are deleted when your storage becomes full.
On Mac OS X, Disk Utility lets you -
runs first aid, partitions, erases, and unmounts a disk, as well as obtains information relating to the drive.
How can you manage all your app updates on Mac OS X?
The App Store.
The App Store allows users to manage updates and set up automatic installation of updates for the apps installed on your Mac. For updates pertaining to the OS, these can be found by going to the Apple Menu ==> System Preferences ==> Software Updates.
What Mac OS X utility allows you to stop a running application?
force quit.
Occasionally, a running application can get hung. Force Quit will list running applications and allow you to halt one at a time. Command+Option+Esc will open the Force Quit window. Select the defective application and select force quit.
How can you open a terminal session on a Mac OS X system?
Select Terminal in the Applications/Utilities folder.
To run a terminal session out of the options provided, you can use Finder, then open the Applications/Utilities folder to find the Terminal application.
How can you find the IP address assigned to a Linux system in the command prompt?
ifconfig (interface configuration)
From the command prompt, the ifconfig command (Interface configuration) will display the IP information the user is looking for.
If you are not familiar with this command, you should know that this is the “go-to” command on Linux-type systems to find IP address information. It’s likely used in nearly all troubleshooting scenarios involving Linux networking. Also important to note is that ifconfig has become deprecated in some Linux distributions, in favor of the iproute2 toolset. The replacement command using iproute2 would be ip addr, although CompTIA A+ only asks you to be familiar with ifconfig on the current exam objectives.
What 3 power plans offered by the Windows OS?
- Power Saver
- Balanced
- High Performance
Hibernate, Suspend, and Standby are states of power.
What’s the purpose of DNS (Domain Naming Server)?
DNS (domain name server) takes domain names like www.abc.com and converts it into a public IP address like 199.181.132.250
What’s the default filesystem on a Mac laptop?
The Apple File System (APFS) is proprietary to Apple and is the default filesystem on the macOS. APFS replaced the HFS and the HFS+ file system.
How do you search a Linux file system for a specific string? What command?
grep
The grep command is a Linux command that can search the file system for a specified string of characters and display all instances of the string found.
What is the most efficient installation method for an upgrade on an entire network?
A network-based installation creates a read-only file share accessible by the installer to be used by all network-connected devices, eliminating the need for a separate installation media, such as a flash drive or an internet connection. It is the most efficient way to upgrade large networks.
On the Mac OS, a .dmg file is -
a disk imaging file that functions like a ISO or a ZIP file.
Cheryl has enabled Fast Startup on her Windows device. What power state does Fast Startup place the device in when shut down?
Hibernation
Explanation:
Hibernation saves the current state of the device when it is shut down, increasing startup speed in Fast Startup. The Suspend, Sleep, and Standby modes do not shut the device off but place it in a state of reduced power consumption.
The system requirements for an application require a 32-bit OS. What OS configurations will be compatible with the application?
both 32-bit and 64-bit OSs
An application that runs a 64-bit OS is compatible with both 64-bit and 32-bit applications. A 32-bit OS, however, is not compatible with a 64-bit application.
Clyde needs to change the permissions on a Linux file from r to rw. Which command line tool should he use?
chmod
The chmod command is used to change file permissions on a Linux OS.
The chown command is used to change the ownership of a Linux file or object.
The ‘sfc’ command is a Windows tool used to check file versions, while the winver command is used to display a Windows GUI dialog box.
Keychain in MacOS does what?
allows users to store passwords, private keys, certificates, and secure notes. It’s a tool for password management.
Which Linux command can be used to terminate a process?
kill
In Linux, the built-in command to terminate a process is the kill command. The kill command can be used to terminate a process using the name or PID.
Which command in Linux can be used to change passwords?
passwd
The command to change passwords in Linux is the passwd command. This command can be used by typing the command passwd followed by the username that needs its password reset. If no username is specified, it will change the password for the current user. The command pwd is also a Linux command, but it shows the present working directory rather than changing the password.
What are the different editions of Windows and their features: Home, Pro, Pro for Workstations, and Enterprise?
Home
Windows 10 comes preinstalled on vendor hardware and is referred to as the original equipment manufacturer (OEM) OS. Windows 10 is also available as a retail product but lacks the ability to join a domain, which other Windows editions offer.
Pro
Windows Pro allows the user to join corporate domains, which makes it the most common OEM OS and the premier Windows retail edition offering.
Pro for Workstations
Windows Pro for Workstations supports up to four CPUs and 6 TB of memory as well as remote directory memory access (RDMA) and non-volatile dual inline memory modules (NVDIMM), which makes it ideal for high-end workstations that require more than two CPUs and over 2 TB of memory.
Enterprise
Windows 10 Enterprise offers all the same functionality as Windows Pro and can be volume licensed for larger enterprises.
What’s Domain Access versus a Workgroup?
Domain access is the ability of the OS to connect to a domain-joined network of computers that provide centralized authentication, administration, and auditing. It is often found in large corporate networks. Domain access is supported in the Windows Pro, Pro for Workstations, and Enterprise editions.
A workgroup is the default mode for the Windows OS and is a decentralized collection of computers or workstations. Windows Home only has the workgroup capability and not domain access.
What’s the desktop and user interface like in Windows?
The Windows desktop and user interface are very similar to previous editions of Windows going back to Windows 95. Users are, however, able to easily customize and personalize the desktop and user interface through the Settings menu. Standard items found on the Windows desktop include the Start menu, the taskbar, and various icons or shortcuts.
What’s the availability of Remote Desktop Protocol (RDP) for a Windows system?
Depends on which edition Windows is running.
Remote Desktop Protocol (RDP) is not supported on Windows Home, but it is supported on Windows Pro, Pro for Workstations, and Enterprise.
What are the hardware limits for RAM and CPU on the 4 Windows editions?
Windows Home supports 128 GB of RAM and two CPUs.
Windows Pro supports 2 TB of RAM and two CPUs.
Windows Pro for Workstations supports 6 TB of RAM and four CPUs.
Windows Enterprise supports 6 TB of RAM and two CPUs.
gpedit.msc
(Group Policy Edit)
The group policy feature is available on all of the covered editions except for Windows Home.
Group policy allows for all domain-connected computers to have group policies and permissions applied through the domain.
Group policies may also be applied locally by using the gpedit.msc command.
When upgrading in Windows, what does Microsoft recommend you do upgrade with, depending on the path?
Microsoft wants you to use like-to-like editions.
Upgrading to an elevated edition requires the use of an activation key. Also, be aware of the recommendations to upgrade to newer versions of the current version before upgrading to Windows 10. For example, before upgrading to Windows 10 from Windows 8, it is recommended that the OS is first upgraded to Windows 8.1.
What’s an in place upgrade?
straight upgrade from the current edition to the latest edition as long as system requirements are met.
cd
(command)
cd = change directory.
Shorthand for the chdir command.
Allows the user to change directories.
Windows
dir
(command)
dir = directory
Allows the user to view a listing of files and folders/subdirectories in a directory.
Windows
md
(command)
md = make directory
mkdir is the same thing
allows the user to make a directory.
Windows
rmdir
(command)
allows the user to remove a directory.
rd is the same thing
rd / rmdir = remove directory
Windows
ipconfig
command that is used to display connectivity information, such as IP address, subnet mask, and default gateway.
This is highly useful in diagnosing network issues.
Windows
ping
used to verify network connectivity by sending an ICMP (Internet Control Message Protocol) packet to a specified address, such as the default gateway.
Windows
hostname
command used to pull up the identity of the computer the Command Prompt is open on.
Windows
netstat
command used to display all the listening and established connections on the host network.
Windows
nslookup
command that is used to verify DNS addresses. Can be used for inline query or interactively.
Windows
chkdsk
command used to view information about the hard disk, including the creation and viewing of reports, as well as to correct file system problems and disk errors.
Windows