How many kibibytes (KiB) are in 1 tebibyte (TiB)?

How many kibibytes (KiB) are in 1 tebibyte (TiB)?

• 1,073,741,824 KiB
• 1,048,576 KiB
• 10,240,000,000 KiB
• 1,000,000 KiB 

 

EXPLANATION

The interpretation of the older term "kilobyte" to denote 1024 bytes, conflicting with the SI definition of the prefix kilo (1000), is still common, mostly in informal computer science contexts
1 kibibyte = 1,024 bytes
1 mebibyte = 1,024 kibibytes
1 gibibyte = 1,024 mebibytes = 1,048,576 kibibytes
1 tebibyte = 1,024 gibibytes = 1,048,576 mebibytes = 1,073,741,824 kibibytes
https://en.wikipedia.org/wiki/Kibibyte

SOURCE

https://en.wikipedia.org/wiki/Kibibyte

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What TCP port is SFTP or Secure File Transfer Protocol commonly used on?

What TCP port is SFTP or Secure File Transfer Protocol commonly used on?

• 7777
• 69
• 22
• 21 

 

EXPLANATION

Secure File Transfer Protocol is commonly placed on 22 as it is also known as File Transfer Protocol on SSH. Not to be confused with File Transfer Protocol over TLS/SSL or FTPS, as there are no answers for ports 989 or 990.
 For more information, see:
https://support.apple.com/en-us/HT202944
https://www.infobyip.com/tcpportchecker.php

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What are the tones called when you press a key on your telephone?

What are the tones called when you press a key on your telephone?

• Multiple Frequency Tone Signal
• Dual Signal Tone Frequency
• Dual Tone Multiple Frequency (MF4)
• Single Tone Frequency 

EXPLANATION

DTMF (dual tone multi-frequency) is the beeping signal to the phone company that you generate when you press an ordinary telephone's touch keys.

https://en.wikipedia.org/wiki/Dual-tone_multi-frequency_signaling

SOURCE

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What is DCL used for in SQL?

What is DCL used for in SQL?

• Monitor database transactions
• Solving deadlock situations
• Control access to data stored in a database
• Control database size and archiving schedule 

 

EXPLANATION

A data control language (DCL) is a syntax similar to a computer programming language used to control access to data stored in a database (Authorization). In particular, it is a component of Structured Query Language (SQL).

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Amazon DNS service is called?

Amazon DNS service is called?

• EC2
• S3 Bucket
• SES
• Route 53 

 

EXPLANATION

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses. 

SOURCE

https://aws.amazon.com/route53/
 

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