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WorksheetsComputer Basics Quiz
Total questions: 189
Worksheet time: 5hrs 22mins
Which of the following is (are) true about computers?
They accept input.
They store data.
They produce output.
A computer processes data in a device called the
server
CPU
device driver
URL
A computer file is a named collection of data that exists on which of the following?
Optical disk (CD or DVD)
Floppy disk
Hard disk
Computers that operate in essentially the same way are said to be
compatible
compound
user-friendly
integrated
Which of the following can supply input to a computer?
A person
The environment
Another computer
Software has two categories: operating system software and application software.
Operating system software example:
Microsoft Word
Unix
Chrome
Macromedia Dreamweaver
Computers perform all basic operations except:
Input data
Process data
Protect data
Output data
Which of the following can supply input to a computer?
A person
The environment
Another computer
The ASCII code for the character 'a' is 97. How can the character 'a' be represented in binary using ASCII codes?
(a)
Which of the following represents the decimal number sequence 0, 1, 2, 3 in binary?
0000, 0001, 0010, 0100
0001, 0010, 0011, 0100
None of the above
0000, 0001, 0010, 0011
Which of the following is the binary representation of decimal number 16?
1100
1111
1110
None of the above
How many hexadecimal digits are needed to represent the decimal number 32?
1
4
8
2
Which of the following is the binary representation of decimal number 23?
11000
11110
10111
None of the above
All of them example of input devices except?
keyboard
mouse
printer
All of them example of output devices except?
Digital computer breaks all types of information into tiny units and use numbers to represent those pieces of information
True
False
An analog computer recognizes data as a continuous measurement of a physical property.
True
False
Information is a collection of raw facts and figures. It may consist of numbers, characters, symbols or pictures etc.
True
False
All of them are examples of hardware except:
CPU
I/O
Memory
Mac OS
Information technology (IT) is the use of any computers, storage, networking and other physical devices, infrastructure and processes to create, process, store, secure and exchange all forms of electronic data.
True
False
All of them are examples of storage devices on the computer except:
CD-ROM
CD-RW
Floppy disk
Scanner
All of them are true about software except:
All electronic components in the system unit are connected to motherboard
(a)
Storage Devices are used to store data permanently even when the computer is turned off
Which of the following memory types holds data but requires very little power to retain its contents?
(a)
The list of instructions that a CPU can execute is known as its
(a)
CPU performance is influenced by which of the following?
What is an area in the computer system unit that temporarily holds data before and after it is processed until the computer is turned off?
(a)
When a computer is turned on, the central processing unit performs instructions specified by the (a) that searches the disk drive for the main operating system files.
Which of the following explains Latency?
Which of the following is the primary function of a CPU?
Where is a computer's CPU located?
(a)
A computer clock with a speed of 100 MHz cycles how many times per second?
(a)
Which of the following components is (are) typically found on the motherboard of a computer?
Consider Computer A, which uses a 1.2-GHz CPU, and Computer B, which uses a 1-GHz CPU. For any given program P, which of the following is true?
Which of the following can be an advantage of buying a computer that contains a widely-used CPU or its equivalent clone?
Which of the following kinds of projects typically requires a special type of CPU that would not be found in a desktop or mainframe computer?
Which of the following is (are) true of modern microprocessors?
Which of the following is (are) true of modern microprocessors?
Microprocessor chips are typically the size of a deck of cards.
Microprocessors typically contain millions of transistors.
Of the following types of storage, which provides the fastest access to data?
(a)
The microprocessor in a multi-purpose computer is also known as the
(a)
Components of the CPU typically include which of the following?
An Arithmetic/Logic Unit typically performs which of the following operations?
Of the following, which best describes what happens when a user opens a document for editing?
Which of the following is (are) true of ROM?
Which of the following types of memory typically holds computer configuration settings and is powered by a small battery?
ROM
Cache
Flash
CMOS
Of the following types of memory, which is least expensive and is not located on the microprocessor?
L1 Cache
L2 Cache
Register
DRAM
Which of the following is (are) true of a bus on the motherboard?
Which of the following are important considerations when purchasing a monitor?
The number of resolution modes supported
The different levels of color depth supported
The size of the viewing area that can be projected
Which of the following are true of Universal Serial Bus (USB)?
Many devices can potentially be interconnected using the USB.
It is used with many types of devices for transferring large amounts of data.
It supports existing serial- and parallel-port devices.
Which of the following are primarily input devices?
A monitor is primarily which kind of device?
An output device
An input device
A memory device
A storage device
The speed of a computer bus is measured in _____, whereas the transfer rate is measured in _____.
(a)
Input devices for a computer include which of the following?
Computer output devices include which of the following?
Which of the following correctly represents the layers of software in a computer system (from lowest level to highest level of abstraction)?
Which of the following statements is true?
Which of the following best describes preemptive multitasking?
Which of the following operations cause(s) a fault to occur?
Encapsulation is:
Hardware is:
Application Program Interface (API):
User interface:
Which of the following deals directly with the signals that control each hardware component?
(a)
Operating systems can be classified into two categories: server operating system and desktop operating system.
(a)
An E-Commerce system consists of the following components. Which of these same components must be included in a database? I. The data, such as information about the goods available for sale, customers, orders placed, shipping information, etc II. A database must include a collection of programs that control the data, such as programs to create, maintain, and manipulate the data. These programs can be easily used to create, maintain, and manipulate data in other domains. III. A database must include a collection of programs that operate on the data, but are specific to the E-commerce system. These programs enable users to browse through the store-items, place orders, track shipping, etc.
Which of them is not true about data files?
Cloud Computing refers to ... the applications online, except this action (select wrong answer)
manipulating
configuring
accessing
Cloud Computing has those advantages except this (select wrong answer)
Scalability
Virtualization
Lower Infrastructure Cost
Elasticity
An E-Commerce system consists of the following components. Which of the same components must be included in a database management system? I. The data, such as information about the goods available for sale, customers, orders placed, shipping information, etc II. A collection of programs must be included that control the data, such as programs to create, maintain, and manipulate the data. These programs can be easily used to create, maintain, and manipulate data in other domains, such as in a library information system III. A collection of programs that operate on the data, but are specific to the E-commerce system. These programs enable users to browse through the store-items, place orders, track shipping, etc.
An E-Commerce system consists of the following components. Which of these same components will constitute a database system? I. The data, such as information about the goods available for sale, customers, orders placed, shipping information, etc II. A collection of programs that control the data, such as programs to create, maintain, and manipulate the data constitutes a database system. These programs can be easily used to create, maintain, and manipulate data in other domains such as in a library information system. III. A collection of programs that operate on the data, but are specific to the E-commerce system, constitutes a database system. These programs enable users to browse through the store-items, place orders, track shipping, etc.
The foreign key in a table T1_____ the same _____ as the corresponding primary key in table T2. I. must have, name II. need to have, name III. must have, id number
A software system that enables users to define the data, maintain it and control its access is called?
Which of them is not component of the database system?
An application specific database
A DBMS that maintains this database
Application Software that manipulates the database
Application programmers
Which of them is not type of the DBMS?
Oracle
Microsoft Access
MySQL
Web Application
The standard data model for modern databases is the relational in the table form.
A primary key, also called a primary keyword, is a key in a relational database that is unique for each record.
DBMS uses Structured Query Language(SQL) for data manipulation.
Database is a shared collection of logically related data and a self-describing collection of integrated records.
There are two ways to store data: data files, in database;
The generic term node or host refers to {~ device on a network ~ network connection ~ the speed with which data is moved ~ physical wires or cables}
device on a network
network connection
the speed with which data is moved
physical wires or cables
Which of them is used to translate hostnames into numeric IP addresses?
TCP
DNS
IP
UDP
Which of them provides reliable connection?
(a)
Data confidentiality is {~ data is not altered unintentionally ~ data access is restricted to authorized personnel ~ services that enable data access are operational ~ malicious programs disabling the system}
data is not altered unintentionally
data access is restricted to authorized personnel
services that enable data access are operational
malicious programs disabling the system
Brute force: {~ matching every word in the dictionary against the password ~ trying all different alphanumeric combinations ~ captures data packets as they are transmitted through the network ~ refers to the action of tricking people into providing information needed to gain access to systems}
matching every word in the dictionary against the password
trying all different alphanumeric combinations
captures data packets as they are transmitted through the network
refers to the action of tricking people into providing information needed to gain access to systems
Social engineering: {~ trying all different alphanumeric combinations ~ matching every word in the dictionary against the password ~ refers to the action of tricking people into providing information needed to gain access to systems ~ captures data packets as they are transmitted through the network}
trying all different alphanumeric combinations
matching every word in the dictionary against the password
refers to the action of tricking people into providing information needed to gain access to systems
captures data packets as they are transmitted through the network
Packet sniffing: {~ captures data packets as they are transmitted through the network ~ trying all different alphanumeric combinations ~ matching every
captures data packets as they are transmitted through the network
trying all different alphanumeric combinations
matching every word in the dictionary against the password
refers to the action of tricking people into providing information needed to gain access to systems
Packet sniffing: captures data packets as they are transmitted through the network
captures data packets as they are transmitted through the network
trying all different alphanumeric combinations
matching every word in the dictionary against the password
refers to the action of tricking people into providing information needed to gain access to systems
IP spoofing: is a technique used to gain unauthorized access to computers, whereby the intruder sends messages to a computer with an IP address indicating that the message is coming from a trusted host
to detect security weaknesses in a remote or local host
is a technique used to gain unauthorized access to computers, whereby the intruder sends messages to a computer with an IP address indicating that the message is coming from a trusted host
where an attacker fakes an email header to make it appear as if it came from somewhere or someone other than the actual source
refers to the action of tricking people into providing information needed to gain access to systems
Virus: is a program that appears to be performing one task while executing a malicious task in the background
attaches itself to a file or software application
is a program that appears to be performing one task while executing a malicious task in the background
is malicious software that can execute itself on a vulnerable remote machine
penetrate computer systems more easily because they do not need a user to execute them
Worm: attaches itself to a file or software application, and then replicates itself on the host computer
the objective of the attacker is to exhaust system resources
attaches itself to a file or software application, and then replicates itself on the host computer
horse is a program that appears to be performing one task while executing a malicious task in the background
penetrate computer systems more easily because they do not need a user to execute them
Encryption: is the process of transforming information so it is unintelligible to eavesdroppers.
a message to be encrypted
is the process of transforming encrypted information so that it is intelligible to the intended recipient.
is the process of transforming information so it is unintelligible to eavesdroppers.
the encrypted version of the text
Decryption: is the process of transforming encrypted information so that it is intelligible to the intended recipient
is the process of transforming information so it is unintelligible to eavesdroppers.
is the process of transforming encrypted information so that it is intelligible to the intended recipient
A message to be encrypted
The encrypted version of the message
Peer to Peer Network: Each workstation has equivalent capabilities and responsibilities
Each workstation has equivalent capabilities and responsibilities
Usually requires a Modem
the most common type is called Ethernet
have been developed in and around large cities
Star Topology: All devices are connected to a central hub
Each device is connected directly to two other devices, one on either side of it.
All devices are connected to a central hub
All devices are connected to one another in the shape of a closed loop.
There are terminators at each end of the bus that stops the signal and keeps it from traveling backwards.
Which of them is not true about Firewalls
A firewall is a software that can be loaded on to a network that can serve as a barrier that keeps destructive forces away from a network of computers
Packets of data are analyzed against a set of criteria or standards called filters.
Filters block certain designated IP addresses.
Provides other companies or individuals with access to the Internet
A digital subscriber line: converts computer data into an analog audio signal for transfer over a telephone line, and then a modem at the destination converts it back again into data
converts computer data into an analog audio signal for transfer over a telephone line, and then a modem at the destination converts it back again into data
uses the same line that your cable TV signals come in on to transfer the data back and forth
uses regular copper phone lines to transfer digital data to and from the phone company's central office
wireless connection
Which of the following services use TCP?
DHCP
SMTP
HTTP
TFTP
FTP
Using Substitution encryption encrypt following: plaintext: GAR encryption key: shift right by two character
G
A
R
Hostname is an unique identification that specifies a particular computer on the Internet
Network software translates a hostname into its corresponding IP address
File server a computer that stores and manages files for multiple users on a network
In a denial of service (DoS) attack, the objective of the attacker is to exhaust system resources such as network connectivity and network bandwidth to prevent legitimate traffic from being transmitted and processed.
A Trojan horse is a program that appears to be performing one task while executing a malicious task in the background.
Web server a computer dedicated to responding to requests (from the browser client) for web pages
To improve the efficiency of transferring information over a shared communication line, messages are divided into fixed-sized, numbered packets
Network Service Provider (NSP): maintains a series of communication links for internet data.
Server is: Any computer on the network that requests services from another computer on the network
Server is:
Any computer on the network that requests services from another computer on the network
Any computer that receives requests from client computers, processes and sends the output
Any page that is hosted on the Internet
The process of creating, modifying web pages
Web Page is:
The process of creating, modifying web pages
Any computer on the network that requests services from another computer on the network
Any computer that receives requests from client computers, processes and sends the output
Any page that is hosted on the Internet
Web Development is:
The process of creating, modifying web pages
Any computer that receives requests from client computers, processes and sends the output
Any computer on the network that requests services from another computer on the network
Any page that is hosted on the Internet
Which of them is not true about WEB server?
used to host the web sites
used to retrieve web sites
used to monitor access
used to control logging
The web information is stored in the Web pages
In HTML format
In the Web server file system
In XML format
In HTTP form
Which of the following is not true about HTTP?
Client-side scripting
TCP/IP (Transport control Protocol/Internet Protocol):
Server side code
Which of them is the server-side language?
Which of them is the client-side language?
HTML
CSS
JavaScript
Define the attribute name: align~ "right";
Cables, wires and satellites
Web browser
HTTP
Client is
HTML is the standardized markup language that structures and formats content on the web. Page elements like the titles, headings, text and links are included.
(a)
CSS allows a programmer to define the look and format of multiple webpages at once; elements like color, layout and fonts are specified in one file that(tm)s kept separate from the core code of the webpage.
(a)
JavaScript is the programming language that brings animation, games, apps, interactivity and other dynamic effects to life.
(a)
Client-side scripting simply refers to any code that facilitates the transfer of data from that web server to a browser. It also refers to any code used to build a database or manage data on the web server itself.
(a)
Server-side scripts run on the web server, which has the power and resources to run programs that are too resource intensive to be run by a web browser.
(a)
The first part of the URL address indicates what protocol to use, and the second part specifies the IP address or the domain name where the resource is located.
(a)
The Internet is a collection of documents that are interconnected by hyper-links.
(a)
The Web is a collection of computers or networking devices connected together.
(a)
Which of the following correctly represents the layers of software in a computer system (from lowest level to highest level of abstraction)?
Which of the following E-Commerce types refers to the consumers make known a particular need for a product or service, and suppliers compete to provide the product or service to consumers?
Which of the following statements is true?
Which of the following best describes preemptive multitasking?
What does ECDL stand for?
Which of the following operations cause(s) a fault to occur?
Encapsulation is:
Hardware:
Application Program Interface (API):
User interface:
Which of the following deals directly with the signals that control each hardware component?
(a)
Operating systems can be classified into two categories: server operating system and desktop operating system.
(a)
Moodle stands for ...
Electronic Retailing (E-Tailing) is?
EFT (Electronic Funds Transfer) is?
EDI (Electronic Data Interchange) is?
How many forms does E-Learning have?
Similar to face-to-face experience but on a massive global scale refers to which feature
EDI (Electronic Data Interchange) is?
How many forms does E-Learning have?
Similar to face-to-face experience but on a massive global scale refers to which feature of E-Commerce?
(a)
Choose the feature of E-Commerce?
Standards
Richness Interactivity
Ubiquity
Reach Universal
Global
Which of them is not type of Synchronous e-learning?
Which of them belongs to Asynchronous e-learning?
Which of them is not characteristics of E-Learning?
Which of them is not advantages of e-commerce?
To which type of E-Governance online training and online conference belong?
Government
employee
Student directed learning refers to the ... type of E-Learning
E-Commerce is?
Electronic Retailing (E-Tailing) is?
A website that is dedicated to exchange of information, goods and services to other business rather than final consumers.
A website where all transactions take place between a business house and the final consumer
A website where all the transactions take place between a consumer and the website acting as a platform that brings the buyer and the seller together.
E-learning is a wide set of applications and processes which use all available electronic media to deliver vocational education and training more flexibly.
(a)
Asynchronous e-learning is student directed, self-paced learning.
(a)
Mission of European Computer Driving License (ECDL) is to enable proficient use of ICT that empowers individuals, organizations and society, through the development, promotion and delivery of quality certification programs throughout the world.
(a)
Open university is a private learning and research university.
Electronic Document Signature (EDS) is data in electronic form, which is logically associated with other data in electronic form and which is used by the signatory to sign.
(a)
Google Docs is a type of cloud computing
(a)
Which one of these is not a cloud computing pricing model
(a)
Which of these is not a major type of cloud computing usage
An Internet connection is necessary for cloud computing interaction
(a)
"Cloud" in cloud computing represents what
(a)
Which of these should a company consider before implementing cloud computing technology. I: Employee satisfaction, II: Potential cost reduction, III: Information sensitivity
(a)
What exactly is cloud computing
What widely used service is built on cloud-computing technology? I: Twitter, II: Skype, III: Gmail, IV: YouTube.
(a)
Cloud computing embraces many concepts that were previously touted as the next big thing in information technology. Which of these is not an antecedent of the cloud?
What does SQL stand for
Which SQL statement is used to extract data from a database?
(a)
Computerized representations of models and attributes of real or simulated entities are?
(a)
Representation of the results of a computational process, such as statistical analysis, or the transcripts of some meanings assigned by human beings is
(a)
Representation of the results of a computer-simulated cognitive process, such as perception, learning, association, and reasoning is
(a)
Continuous representation, similar to the actual information it represents is
(a)
A discrete representation, breaking the information up into separate(discrete) elements is
(a)
Two bits can represent
(a)
The extended version of the ASCII character set is not enough for international use
(a)
