Information technology MCQs
Showing 50 questions (Total: 2310)
What is the process of defining two or more methods within the same class that have same name but different parameters declaration?
Correct Answer:
B: method overloading
Which of the following is a valid declaration of an object of class Box?
Correct Answer:
A: "Box obhj -new BOx();"
Which of the following sends packages over unprotected stream?
Correct Answer:
B: NAT
Junk e-mail is also called --?
Correct Answer:
B: Sniffer Script
Explanation:
Junk e-mail is also called --? Correct Answer Sniffer Script Junk e - mail is also called Spam. Sending irrelevant messages or the same message to a large number of users over the internet for the purpose of advertisement or malicious intent is called as spamming and that content is called as SPAM or JUNK.
Who is the father of computer ?
Correct Answer:
B: Charles Babbage
Explanation:
Who is the father of computer ? Correct Answer Charles Babbage Babbage is considered by some to be "father of the computer". Babbage is credited with inventing the first mechanical computer, the Difference Engine, that eventually led to more complex electronic designs, though all the essential ideas of modern computers are to be found in Babbage's Analytical Engine. His varied work in other fields has led him to be described as "pre - eminent" among the many polymaths of his century.
Gigabyte is equal to --- ?
Correct Answer:
D: 1024 megabytes
Explanation:
Gigabyte is equal to --- ? Correct Answer 1024 megabytes 1 bit = Either 0 or 1 1 byte = 8 bits 1 kilobit = 1000 bits 1 kilobyte = 1024 bytes (binary) | 1000 bytes (decimal) 1 Megabit = 1000 bytes 1 Megabyte = 1024 kilobytes (binary) | 1000 kilobytes (binary) 1 Gigabit = 1000 Megabits 1 Gigabyte = 1024 megabytes (binary) | 1000 megabytes (decimal) 1 Terabit = 1000 Gigabits 1 Terabyte = 1024 gigabytes (binary) | 1000 gigabytes (decimal
The common keyboard arrangement is called the ___layout
Correct Answer:
D: qwerty
Explanation:
The common keyboard arrangement is called the ___layout Correct Answer qwerty একটু লক্ষ্য করলে দেখা যাবে যে, কম্পিউটার কিবোর্ড এর উপরে Tab বাটন এর ডান পাশ থেকে প্রথম 6টি কী হলো এই Q - W - E - R - T - Y. মূলত এজন্যই কীবোর্ডটিকে qwerty কীবোর্ড বলা হয়।
Which of the following is false about a binary search tree?
Correct Answer:
D: Either the left of the right sub- tree should be be binary search tree but not both.
Which of the following is not anti-virus software ?
Correct Answer:
C: Oracle
Explanation:
Which of the following is not anti-virus software ? Correct Answer Oracle Oracle offers a comprehensive and fully integrated stack of cloud applications and platform services.
A grapgh having an edge from vertex to every other vertex is called.
Correct Answer:
A: "Lightly connected"
Which of the following consists of one or more filaments of glass fiber wrapped in protective layers that carries data by pulse light ?
Correct Answer:
C: Optical fiber
Explanation:
Which of the following consists of one or more filaments of glass fiber wrapped in protective layers that carries data by pulse light ? Correct Answer Optical fiber Optical fiber cable Optical fiber cable consists of one or more filaments of glass fiber wrapped in protective layers that carries a data by means of pulses of light. It transmits light which can travel over extended distances.
In MS Word, which of the following is not a font style?
Correct Answer:
C: Superscript
Explanation:
In MS Word, which of the following is not a font style? Correct Answer Superscript Superscripts Superscript is not related to the font style. It is a letter, character number or symbol that is set slightly for the normal line of type. It is generally smaller than the body of the text and detailed occurs at the baseline.
The main program in an operating system is called:
Correct Answer:
A: Kernel
Explanation:
The main program in an operating system is called: Correct Answer Kernel An Operating System (OS) is an interface between a computer user and computer hardware. An operating system is a software which performs all the basic tasks like file management, memory management, process management, handling input and output, and controlling peripheral devices such as disk drives and printers.
When is linear search used/
Correct Answer:
D: When list has only a few elements and when performing a single search in an underdone ist
"Pushing an elemnt into stack already having five elements and stack size of 5, results in "
Correct Answer:
A: "Overflow "
WAN stands for -- ?
Correct Answer:
B: Wide Area Network
Explanation:
WAN stands for -- ? Correct Answer Wide Area Network A wide area network (WAN) is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits
Which of the following is a correct format for declaration of function?
Correct Answer:
A: "return-type function name (argument type;)"
Quickrt can be categorized as
Correct Answer:
B: Divide and Conquer"
Which of the following doesn't requirement an & for the input in Scant()?
Correct Answer:
A: "char name [10]."
The bus stop opposite to BIRDEM is visited by the 'BRTC' and 'Megacity' buses. A BRTC bus stops there at exactly 4pm.What can we conclude about the people waiting at the stop at 4.01 pm the same afternoon ?
Correct Answer:
D: I and II
which pair (s) of bankers cannot speak without an interpreter ?
Correct Answer:
A: CD & BE
Besides Mr. E, which of the banker (s) can speak to Mr.D without an interpreter ?
Correct Answer:
C: Both Mr.A and Mr.B
which Programming language (s) are classified as low level language (s) ?
Correct Answer:
D: Assembly language
Explanation:
which Programming language (s) are classified as low level language (s) ? Correct Answer Assembly language assembly language Two common types of low - level programming languages are assembly language and machine language. Software programs and scripts are written in high - level languages, like C#, Swift, and PHP. A software developer can create and edit source code in a high - level language using a programming IDE or even a basic text editor.
Semiconductor memory device in which stored data will remain permanently stored as long as power is supplied is --
Correct Answer:
D: static memory device
Explanation:
Semiconductor memory device in which stored data will remain permanently stored as long as power is supplied is -- Correct Answer static memory device বাংলাদেশের একমাত্র মহিলা ট্রেনিং কলেজটির অবস্থান ময়মনসিংহ জেলায়। উল্লেখ বাংলাদেশে মোট সরকারি ১৪টি টিচার্স ট্রেনিং কলেজ রয়েছে।
Which of the following is the most widely used computer device ?
Correct Answer:
C: Internal hard disk
Explanation:
Which of the following is the most widely used computer device ? Correct Answer Internal hard disk ইন্টার্নাল হার্ডডিস্ক সকল কম্পিউটারে থাকে।
which one of the following extends a private network across public networks ?
Correct Answer:
D: Virtual private network
Explanation:
which one of the following extends a private network across public networks ? Correct Answer Virtual private network A virtual private network (VPN) is a network that is constructed using public wires — usually the internet — to connect remote users or regional offices to a company's private, internal network.
'LAN' means ?
Correct Answer:
B: Local Area Network
Explanation:
'LAN' means ? Correct Answer Local Area Network LAN এর পূর্ণরূপ Local Area Network । সাধারণত ১০ কিমি বা তার কম এরিয়ার মধ্যে বেশ কিছু কম্পিউটার বা অন্য কোনো পেরিফেরাল ডিভাইস সংযুক্ত করে এ ধরনের নেটওয়ার্ক তৈরি করা হয়। স্কুল, কলেজ, বিশ্ববিদ্যালয় ক্যাম্পাস বা কোনো অফিস ভবনে এ ধরনের নেটওয়ার্ক সংযোগ দেয়া হয়।
Computer keyboard is also known as ---
Correct Answer:
C: Console
Explanation:
Computer keyboard is also known as --- Correct Answer Console Computer keyboard হলো একটি জনপ্রিয় ইনপুট ডিভাইস। কী বোর্ডকে – (কনসোল) ও বলা হয়।
The printed output from a computer is called --
Correct Answer:
C: Hard Copy
Explanation:
The printed output from a computer is called -- Correct Answer Hard Copy কোনো ডকুমেন্টকে (টেক্সট, ইমেজ বা অন্য কিছু) প্রিন্ট না দিয়ে কম্পিউটারে ব্যবহার উপযোগী রাখা বা পোর্টেবল স্টোরেজ ডিভাইসে বহন কারে নেয়া গেলে ঐ ডকুমেন্টটিকে সফট কপি বলে। আর প্রিন্ট দিয়ে কাগজে নিলে তাকে হার্ডকপি বলে।
Shortcut key of printing a document for computer having windows is --
Correct Answer:
C: Ctrl + P
Explanation:
Shortcut key of printing a document for computer having windows is -- Correct Answer Ctrl + P উইন্ডোজ অপারেটিং সিস্টেমের কম্পিউটারে কোনো ডকুমেন্ট দ্রুত প্রিন্ট দিতে Ctrl + P কমান্ড চাপতে হয়। এত একটি ডায়ালগ বক্স আসে যেখানে প্রয়োজন মতো বিভিন্ন অপশন নির্বাচন করে print বাটনে প্রেস করলে ডকুমেন্ট প্রিন্ট হয়। এছাড়া কোনো ডকুমেন্ট পেইজের ফাইল মেনু থেকেও ডকুমেন্টটি প্রিন্ট করা যায়।
Arrange in ascending (Highest to lowst) order the units of memory TB,KB,GB,MB.
Correct Answer:
C: TB>GB>MB>KB
Explanation:
Arrange in ascending (Highest to lowst) order the units of memory TB,KB,GB,MB. Correct Answer TB>GB>MB>KB কম্পিউটারের তথ্য ধারণের জন্য ব্যবহৃত মেমোরি বা স্মৃতির ধারণ ক্ষমতার সবচেয়ে বড় এবং (প্রচলিত ব্যবস্থায়) টেরাবাইট বা TB । এর পরে রয়েছে যথাক্রমে – GB, MB, KB ও Byte.
Which of the following is an example of a binary number ?
Correct Answer:
A: 100101
Explanation:
Which of the following is an example of a binary number ? Correct Answer 100101 বাইনারি পদ্ধতিতে কোনো সংখ্যা দুটি বাইনারি ডিজিট 0 ও 1 দিয়ে লেখা হয়। অপশন গুলোর মধ্যে a অপশনের সংখ্যাটিই শুধু 0 ও 1 ডিজিট দিয়ে লিখিত সংখ্যা। সুতরাং (a) 100101 - ই সঠিক উত্তর।
How many litters of apple juice were added to the orange juice in a certain container ?
Correct Answer:
A: The amount of apple juice added was 3/2 of the amount of orange juice in the container
In MS Powerpoint which function key in the keyboard is used as a shortcut key for starting slideshow?
Correct Answer:
C: F5
which of the following numbers can be placed at the sing of interrogation?
Correct Answer:
A: 4
Explanation:
which of the following numbers can be placed at the sing of interrogation? Correct Answer 4 প্রথম সারিতে 27 + 22 + 1 = 50, দ্বিতীয় সারিতে 13 + 12 + 1 = 26. তৃতীয় সারিতে হবে 9 + 2 + 1 = 12.
The process of staring or staring a computer is ___
Correct Answer:
B: Boot
Explanation:
The process of staring or staring a computer is ___ Correct Answer Boot একটি কম্পিউটার স্টার্ট হওয়ার সময় কিভাবে, কোন কোন ফাইল ব্যবহার করার মাধ্যমে স্টার্ট হবে তা BIOS এ লেখা থাকে। কম্পিউটার স্টার্ট হওয়ার পদ্ধতি বা প্রক্রিয়াকে Boot/Booting বলে।
The process of removing unwated part of an image is called
Correct Answer:
D: Cropping
Explanation:
The process of removing unwated part of an image is called Correct Answer Cropping The process of removing unwanted part of an image is called as cropping tool. Using this tool enables the person to crop the image as per the desired size or make the user remove the unwanted parts from the picture.
The primary job of the operating system of a computer is to
Correct Answer:
A: Manage resources
Explanation:
The primary job of the operating system of a computer is to Correct Answer Manage resources Primary job of the OS is to manage resources of computer and coordination with CPU and users.
when CPU is executing a program that is part of the Operating System , it is said to be in __
Correct Answer:
A: Interrupt mode
Explanation:
when CPU is executing a program that is part of the Operating System , it is said to be in __ Correct Answer Interrupt mode PU work in operating system using interrupt handler program.
which one of the following represents the binary equivalent of the decimal number 23?
Correct Answer:
B: 10111
Explanation:
which one of the following represents the binary equivalent of the decimal number 23? Correct Answer 10111 এটি একটি বিশেষ একটি বিশেষ সিরিজ যার মাধ্যমে কোন সংখ্যাকে বাইনারিতে পরিবর্তন করা যায়। ১. প্রথমত, সংখ্যাটি (23) বিজোড় হলে Series এর 1 সংখ্যাটিকে কাউন্ট করতে হবে আর জোড় হলে 1 সংখ্যাটিকে কাউন্ট করার দরকার নেই। সেখানে শূন্য বসাতে হবে। সুতরাং, বাকি থাকে 22। Series: 128 - 64 - 32 - 16 - 8 - 4 - 2 - 1 Count: 1 ২. সংখ্যাটি Series এর যেই বৃহত্তম সংখ্যার কাছাকাছি সেই সংখ্যাটিকে কাউন্ট করতে হবে এখানে সংখ্যাটি ২২ সুতরাং কাছাকাছি বৃহত্তম সংখ্যা 16। সুতরাং 16 এর নিচে 1 কাউন্ট বসাতে হবে। Series: 128 - 64 - 32 - 16 - 8 - 4 - 2 - 1 Count: 1 1 ৩. সর্বমোট আমাদের হাতে জমা হলো 17। বাকি থাকে 6 এবার মিলিয়ে দেখতে হবে কোন কোন কোন সংখ্যা নিলে 6 সংখ্যাটি বের করা যায়। অবশ্যই 4 এবং 2। সুতরাং 4 এবং 2 এর নিচে 1 কাউন্ট বসাতে হবে। Series: 128 - 64 - 32 - 16 - 8 - 4 - 2 - 1 Count: 0 - 0 - 0 - 1 - 0 - 1 - 1 - 1
Each character on the keyboard of computer has an ASCII value which stands for
Correct Answer:
A: American Standard Code for Information Interchange
Explanation:
Each character on the keyboard of computer has an ASCII value which stands for Correct Answer American Standard Code for Information Interchange Meaning of ASCII is American standard code for information interchange.
How long is an IPv6 address?
Correct Answer:
B: 128 bits
Explanation:
How long is an IPv6 address? Correct Answer 128 bits IPV4 is 32 bits IPV6 is 128 bits
Any data or instruction entered into the memory of a computer is considered as
Correct Answer:
D: Information
Bride works in which layer of the OSI model?
Correct Answer:
C: Datalink layer
Explanation:
Bride works in which layer of the OSI model? Correct Answer Datalink layer Bridge works at layer 2 (Data Link) because they examine the MAC address.
DHCP is the abbreviation of
Correct Answer:
B: Dynamic Host Configuration Protocol
Explanation:
DHCP is the abbreviation of Correct Answer Dynamic Host Configuration Protocol ইন্টারনেট ব্যবস্থায় যুক্ত হওয়ার জন্য একটি ডিভাইস এর IP Address Configuration, DNS Server Address, Subnet Mask ইত্যাদি প্রয়োজন। এই সবকিছুই DHCP একটি প্যাকেজ আকারে সরবরাহ করে যার মাধ্যমে একটি ডিভাইস ইন্টারনেট ব্যবস্থায় যুক্ত হতে পারে।
websites without a database attached to them have which of the following characteristics?
Correct Answer:
B: Static information using HTML or JAVA Script
Explanation:
websites without a database attached to them have which of the following characteristics? Correct Answer Static information using HTML or JAVA Script যেহেতু ডাটাবেজ নেই সুতরাং SQLব্যবহার করার সুযোগ নেই। TCP/IP হলো এক ধরনের নেটওয়ার্ক প্রটোকল যা ইন্টারনেট যোগাযোগ ব্যবস্থার সাথে সংশ্লিষ্ট। যেহেতু ডাটাবেজ ব্যবহার করার সুযোগ নেই সুতরাং ওয়েবসাইটটি শুধুমাত্র স্ট্যাটিক (পরিবর্তনশীল নয় এমন) তথ্য দেখাতে পারবে।
which of the following is used to transfer files ?
Correct Answer:
B: FTP
Explanation:
which of the following is used to transfer files ? Correct Answer FTP The file Transfer Protocol(FTP) is standard network protocol used to transfer computer files from one host to another host over a TCP – based network, such as the internet.
which organization defines the Web Standards ?
Correct Answer:
C: World Wide Web consortium
Explanation:
which organization defines the Web Standards ? Correct Answer World Wide Web consortium The world wide web consortium (W3C) is the main international standards organization for the world wide web.
From what location are the 1 st computer instructions available on boot up?
Correct Answer:
C: boo.ini
Explanation:
From what location are the 1 st computer instructions available on boot up? Correct Answer boo.ini Boot.ini file হল এমন একটি ফাইল যা কম্পিউটারের BIOS এর মধ্যে সেভ করা থাকে এবং একটি কম্পিউটার স্টার্ট হওয়ার সময় কিভাবে, কোন কোন ফাইল ব্যবহার করার মাধ্যমে স্টার্ট হবে তা লেখা থাকে।
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 ?
Correct Answer:
B: /24
Explanation:
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 ? Correct Answer /24 2.2.2. 64/20 means 20 bits Id the network. You need 10 subnets so 10 + 2 = 12 next highest power of 2 is 16(24), the 4 bits will be borrowed from the host and added to the network portion. So your /20 network bits becomes /24 which represent the mask.