What is the keyboard shortcut to bring up the Task Manager?

What is the keyboard shortcut to bring up the Task Manager?

• Alt-Tab
• Ctrl-Shift-Escape
• Windows key-R
• Ctrl-Alt-Delete 

EXPLANATION

The correct answer is Ctrl-Shift-Esc. This keyboard shortcut is an easy and fast way to quickly bring up task manager and the resource monitor.

SOURCE

https://www.cnet.com/how-to/tip-of-the-day-a-quick-keyboard-shortcut-for-task-manager/

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On most systems, what is one of the first programs loaded on start-up (after the bootloader)?

On most systems, what is one of the first programs loaded on start-up (after the bootloader)?

• Kernel
• BIOS
• Master Boot Record
• Windows 

EXPLANATION

The kernel is a computer program that is the core of a computer's operating system, with complete control over everything in the system.[1] On most systems, it is one of the first programs loaded on start-up (after the bootloader).
It handles the rest of start-up as well as input/output requests from software, translating them into data-processing instructions for the central processing unit. It handles memory and peripherals like keyboards, monitors, printers, and speakers.

SOURCE

https://en.wikipedia.org/wiki/Kernel_(operating_system)

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What is the main function of BIOS?

What is the main function of BIOS?

• To enable the graphics card
• To load the operating system
• To upgrade drivers
• To enable the network card 

EXPLANATION

BIOS uses Flash memory, a type of ROM. The BIOS software has a number of different roles, but its most important role is to load the operating system.
When you turn on your computer and the microprocessor tries to execute its first instruction, it has to get that instruction from somewhere.

SOURCE

https://computer.howstuffworks.com/bios1.htm

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Convert 101 from decimal to binary.

Convert 101 from decimal to binary.

• 1011001
• 1010101
• 1110111
• 1100101 

EXPLANATION

From right to left, each column represents double the last column starting with the number 1. So the answer: 1100101 represents from right to left: (1x1) + (0x2) + (1x4) + (0x8) + (0x16) + (1x32) + (1x64) = 101.

Here are step-by-step instructions on how to convert the decimal number 101 to a binary number.

Step A) Determine if 101 is an even or odd number. If it is even, you assign a 0 and if it is odd you assign a 1.

Step B) Deduct the 1 or 0 in step A from 101 and then divide it by 2. Then, you see if that number is even or odd and then assign a 0 or 1 like step A.

Step C) Repeat step B with the new number until the number you get is 1.

Step D) Put all the 0s and 1s you assigned in reverse order to get the answer.

To illustrate better, we detailed below how we converted 101 decimal to binary using the steps above.

101 → 1

(101 - 1)/2 = 50 → 0

(50 - 0)/2 = 25 → 1

(25 - 1)/2 = 12 → 0

(12 - 0)/2 = 6 → 0

(6 - 0)/2 = 3 → 1

(3 - 1)/2 = 1 → 1

Then you put the binary number above in reverse order and you get the answer:

1100101

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In Cisco IOS, how do you enter into Privileged EXEC mode?

In Cisco IOS, how do you enter into Privileged EXEC mode?

• Su
• Login
• Exec
• Enable 

EXPLANATION

Privileged EXEC mode is password protected, and allows the use of all EXEC mode commands available on the system. To enter privileged EXEC mode from user EXEC mode, use the enable command.
Privileged EXEC mode allows access to global configuration mode through the use of the enable command. The privileged EXEC mode prompt consists of the devices's host name followed by the pound sign: Router# .
http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf019.html

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