Operating systems (10) Flashcards
You are at a Linux workstation on your network with the terminal open. Which command can you issue to see the size of files and directories on this computer?
fsck
df
du
du
The du (disk usage) command will show how much disk space is being used. By default, it shows usage in disk blocks, which isn’t very reader-friendly. Use the -h option to show it in kilobytes, megabytes, and so on, and use the -a option to show all files and directories. To use both together, the syntax would be du -ah/[volume_name]
You want to start the visual file editor on your Linux server. Which command is used to do that?
cd
ps
vi
vi
The vi command (shortened from visual) is used to open a window-oriented text editor in Linux. The cd command is for change directory, ps lists processes, and cp is copy
What feature in Windows 10 allows a user to synchronize files and folders between the local system and an offline location?
Credential Manager
MSINFO32
Sync Center
Sync Center
Sync Center in Windows 10 (from Windows 7 and after) allows users to select a folder or particular files and maintain synchronization between the local system and an offline location, such as, for example, on a network server
One of the workstations on your network runs Ubuntu Linux. Which command can you use to install patches to upgrade the operating system?
apt-cache
apt-get
vi-get
apt-get
Depending on the variant of Linux you are running, apt (Advanced Package Tool) can be useful in getting the patches from a repository site and downloading them for installation. The most common command used with this tool is apt-get, which, as the name implies, gets the package for installation
What does the taskkill command do on a Windows system?
Shuts down the machine gracefully
Kills all applications running at the time
Kills a single process
Kills a single process
The taskkill command is a command-line command, which typed with a task ID number, will kill that process. The command must be done with a command prompt window with administrative privileges
Which of the following features are typically present in mobile operating systems by default but not in desktop operating systems? (Choose two.)
SDK
Power options
Gesture-based interaction
Emergency notifications
Gesture-based interaction
Emergency notifications
To interact with a mobile operating system, people can use gesture-based interaction, or gestures. Mobile devices also have emergency notifications built-in, for Amber alerts or government-declared emergencies. Software development kits (SDKs) are available for nearly all OSs, as are power options
Which feature of MacOS allows others to see your screen and requires a Virtual Network Computing (VNC) connection?
Shell/Terminal
Image sharing
Screen sharing
Screen sharing
Screen sharing is a MacOS feature that allows you to share your screen with others. It requires a Virtual Network Computing (VNC) connection
What operating system developed by Google is compatible with Android-based tablets?
Ubuntu
iOS
Chrome
Chrome
Chrome OS was designed by Google, and may be installed on tablets, smartphones, laptops and desktops alike
What network optimization feature can run in distributed or hosted mode?
LocalCache
BranchCache
CacheBypass
BranchCache
BranchCache is a network optimization feature found in the Windows OS, from version 8 onward. Network bandwidth is optimized as web content from a WAN connection and is cached locally. Local machines then fetch the web content from one or more servers (hosted mode) or from other local clients (distributed)
What modern partitioning scheme replaces Master Boot Record and eliminates the need for an extended partition?
Primary
Dynamic
GPT
GPT
GUID Partition Table (GPT) does not require an extended partition as needed by MBR. MBR is also limited to 2 TB drives, while the more modern GPT has no such limitation
Which command-line tool allows an administrator to prepare and mount a Windows Desktop image?
dism
chkdisk
diskpart
dism
Deployment Image Servicing and Management (dism) is used to prepare and mount a Windows Desktop image. The chkdisk tool identifies damaged disk sectors, while the diskpart tool will clean and format a disk partition. The netstat tool provides various network statistics
Which disk management tool is used to pool together multiple hard drives?
Diskpart
Storage spaces
robocopy
Storage spaces
Storage spaces will pool together multiple hard drives, similar to creating a RAID set. Disk management also provides this feature
Which Windows 10 networking option is available to permit connecting to the Internet using a cellular connection.
VPN
CAN
WWAN
WWAN
Wireless WAN (WWAN) is an option in Windows 10, provided it is enabled by the hardware, likely in the BIOS. WWAN provides Internet connectivity via cellular use
What policy would an administrator set to limit network bandwidth usage on a Windows Server 2016 system?
NBG
DSCP
QoS
QoS
Quality of Service is not a networking technology just in Windows; in Windows Server 2016, an administrator can define a QoS policy to limit network bandwidth. The Differentiated Services Code Point (DSCP) is not a stand-alone policy but one of the values in configuring QoS
What does KeyChain provide the user in MacOS?
Password management
Local file sharing
Certificate management
Password management
Remembering the passwords for various websites is easily managed in MacOS with Keychain
