631 . Your PC tells you that your 200 M hard drive is out of space. However, when you run DIR, the total size of your files add to less than 200 M. How do you account for this difference?
  • A. Rounding
  • B. Hidden files
  • C. Math error
  • D. Drive specifications are in hexadecimal, where as the DIR command calculates in decimal
  • E. None of these
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632 .  .....provides a connection- oriented reliable service for sending massage.    
  • A. TCP
  • B. IP
  • C. UDP
  • D. None of these
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633 .  An organization is granted a block; one address is 2.2.2.64/20. The organization needs 10 subnets. What is the subnet prefix length?    
  • A. 720
  • B. 724
  • C. 723
  • D. None of these
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634 .  Each IP packet must contain -    
  • A. Only Source Address
  • B. Only Destination Address
  • C. Source and Destination Address
  • D. None of these
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635 .  For a computer 'LCD' stands for-
  • A. Liquid Crisis Disparity
  • B. Liquid Cross Data
  • C. Large Crystal Display
  • D. Liquid Crystal Display
  • E. Large Capable Display
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636 .  How do the main components of the computer communicate with each other?  
  • A. System bus
  • B. Memory
  • C. Keyboard
  • D. None
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637 .  How long is an IPv6 adress?
  • A. 32 Bit
  • B. 128 Bits
  • C. 64 Bits
  • D. 132 Bits
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বিভিন্ন মন্ত্রণালয় | সহকারী ম্যানটেনেন্স প্রকৌশলী | 24-05-2022
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638 .  In an email address abc@xxx.bd , the portion 'xxx' indicates-
  • A. Domain name
  • B. TCp/IP layer name
  • C. Domain Type
  • D. Protocol name
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বিভিন্ন মন্ত্রণালয় | সহকারী ম্যানটেনেন্স প্রকৌশলী | 24-05-2022
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639 .  In MS Word, pressing Ctrl + S will result in-
  • A. Saving the document
  • B. Centering alignment
  • C. Exiting from MS Wordd
  • D. Underlining text
  • E. Deleting text
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640 .  The advantage of using a spreadsheet is--
  • A. calculation can be done autometically
  • B. changing data autometically updates calculations
  • C. more flexibility
  • D. All of the above
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641 .  Unsolicited commercial e-mail is commonly known as-
  • A. Junk
  • B. Hoaxes
  • C. Spam
  • D. Hypertext
  • E. Virus
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642 .  Which is an essential component of a LAN?
  • A. Router
  • B. Gateway
  • C. NIC
  • D. Modem
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643 .  Which of the following is a private IP adress?
  • A. 12.0.0.1
  • B. 168.172.198.39
  • C. 172.15.14.36
  • D. 192.168.24.43
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বিভিন্ন মন্ত্রণালয় | সহকারী ম্যানটেনেন্স প্রকৌশলী | 24-05-2022
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644 .  Which of the following is required to connect a computer to the internet?  
  • A. Pen Drive
  • B. Mouse
  • C. DVD
  • D. Modem
  • E. None of these
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645 .  Which of the following shortcut keys do you use to find a specific word in a document?  
  • A. Ctrl + C
  • B. Ctrl + X
  • C. Ctrl + F
  • D. Ctrl + S
  • E. None of these
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