Answer:
conditional formatting is a feature in many spreadsheet application that allow you to apply specific formatting to cells that meet certain criteria.It is most often used on color based formatting to highlight emphasize or differentiate among data and information stored in spreadsheet
If someone wants to use a wireless keyboard and mouse with a laptop computer, below are the steps.
First check if there’s a USB receiver attached to the mouse or keyboard. If there is, see below steps.
1. Connect the USB receiver of both mouse and keyboard into the USB port of your laptop computer. Some USB dongle would ask you to install or add it your device, just click OK and then add.
2. Make sure that the batteries on your wireless keyboard and mouse are working. And also check if the keyboard and mouse are turned on or have power.
3. Check if there’s a “connected” indication for both wireless mouse and keyboard on your laptop. You can now use your wireless mouse and keyboard on your laptop.
If there’s no USB receiver, and you’re using a bluetooth wireless mouse and keyboard, below are some steps to follow.
1. Turn on bluetooth connection on your laptop.
2. Make sure that batteries are working and turn on both wireless mouse and keyboard.
3. On your laptop, find your wireless mouse and keyboard under bluetooth option and connect the devices. You can now use your wireless bluetooth mouse and keyboard for laptop.
Answer:
Dubbed “El Capitan,” the supercomputer is part of the Exascale Computing Project, a DOE effort to increase computing power so that the department can run highly advanced simulations and modelling of the United States' nuclear arsenal. These simulations help alleviate the need for underground testing.
Answer:
The answer is by using a covert channel like shared memory objects such as files, directories,messages, etc since both the user and the sender of the document are on same network of the company.
Explanation:
The Bell LaPadula MultiLevel Security model was a security policy developed by Bell and LaPadula in 1973 in response to a security issue raised by the US Air Force regarding file-sharing mainframe computers . Actually, many people with networked systems have realized by early 1970s that the protection purportedly offered by many commercial operating systems was poor, and wa not getting better any time soon. This was observed when it was noticed that as one operating system error was fixed, some other vulnerability would be discovered. There was also the constant worry that various unskilled users would discover loopholes in the operating system during usage and use them to their own advantage.
Information release may take place via shared memory objects such as files, directories, messages, and so on. Thus, a Trojan Horse acting on behalf of a user could release user-private information using legitimate operating system requests. Although developers can build various mechanisms within an operating system to restrict the activity of programs (and Trojan Horses) operating on behalf of a user , there is no general way, short of implementing nondiscretionary policy models, to restrict the activity of such programs. Thus, given that discretionary models cannot prevent the release of sensitive information through legitimate program activity, it is not meaningful to consider how these programs might release information illicitly by using covert channels.
For example, for someone with higher integrity level (SECRET) to send an accounts payable application to a user, if the untrusted accounts payable application contains a Trojan Horse, the Trojan Horse program could send a (legal) message to the said user process running at a lower integrity level (CONFIDENTIAL), thereby initiating the use of a covert channel. In this covert channel, the Trojan Horse is the receiver of (illegal) lower integrity-level input and the user process is the sender of this input.
Answer:
B, the NOR gate
Explanation:
The truth table of a NOR gate is below.
