COMPUTER SCIENCE AND ENGINEERING
OPERATING SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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External storage device
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Security program
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Operating system
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Photo or video editing program
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Detailed explanation-1: -The correct answer is Scanner. A scanner is an input device that scans documents such as photographs and pages of text. A scanner is not an external memory.
Detailed explanation-2: -Detailed Solution. The correct answer is DOS. Application software is a computing software designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users.
Detailed explanation-3: -A personal digital assistant(PDA) is an example of real-time operating system.
Detailed explanation-4: -Out of the given options, Oracle is not an operating system.
Detailed explanation-5: -A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet.