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Programming answers to 40 questions

Answer: D. store electric charges. The main function of a capacitor in an electric circuit is the storage and release of electricity in that circuit. The capacitor also helps in passing alternating current without passing a direct current. The capacitor…
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Answer: C. optical discs An optical disc is a flat, circular disc that uses the techniques of optical storage to read, write, and interpret data. CD-ROMs and DVDs are examples of optical discs as they possess these features. These storage…
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Answer: B. Processing logic. Data that provides information regarding one or more aspects of another given data is referred to as metadata. Metadata summarizes the basic information about data capable of making the process of tracking and working with specific…
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Answer: C. Application proxy An application proxy helps in securing remote access to web applications. With application proxy, users are capable of accessing on-premises web applications without having to change or update their applications. An application proxy includes in it…
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Answer: B. information-processing theory The information processing theory uses a computer model to formulate a description for human learning. The whole concept of data collection, processing, and release of information as well as the storage and retrieval of information can…
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Answer: B. The Internet Concurrent supply chains have been made possible as a result of the internet. Through the internet, important components like inventory management, purchasing, transportation, customer services, production scheduling, vendor relations, and warehousing have been managed effectively. Generally, information…
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Answer: B. Microprocessors are faster, smaller and less expensive than integrated circuits. Microprocessors are generally faster, smaller, and less expensive when compared to integrated circuits. Microprocessors are also integrated circuits but with a higher level of integration of which includes…
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Answer: D. using a binary search In searching for a particular member of an array, the array is searched thoroughly until the member is found. The linear search or sequential search is a very simple algorithm that uses a loop…
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Answer: C. Input Data put into a computer for processing is known as input. Input is something entered into a system or machine to derive information. For example, the text typed into a computer is an input. Generally, input is…
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Answer: D. Windows operating system Application software performs specific tasks for an end-user. Google Chrome is an application software and with this app, a user can effectively interact with it. Mobile apps like Facebook, Candy Crush, and Whatsapp are also…
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Answer: B. Oracle An operating system (OS) is system software used in managing computer software, hardware resources, and also in the provision of common services for computer programs. An operating system is the intermediary existing between computer hardware and programs.…
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Answer: C. Time bombs Time bombs are viruses triggered only by the passage of time or on a certain date. Some malicious software like viruses and worms tend to contain some logic bombs used in executing a certain payload at…
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A proper webpage will use the <Body> tag to contain the entire visible HTML. Literally, the <Body> tag is the content of an HTML document. The only thing the <Body> tag does not contain is the page title which will…
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Answer: C. X-86-64 processor X-86-64 is a 64- bit version of the X-86 processor. By default, CPUs using the X-86-64 architecture operate in 64-bit mode. They can as well be backward-compatible with 16-bit and 32-bit applications. The X-86-64 architecture supports…
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Answer: C. RJ45 100BaseT, also known as “fast internet”, is a network standard used to achieve very fast data transfer rates of up to 1000 Mbps. Generally, 100BaseT is known to be 10 times faster than the standard Ethernet. High…
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Answer: B. CMOS RAM The CMOS (Complementary Metal-Oxide Semiconductor) RAM is an onboard, battery-powered semiconductor chip inside computers that stores information. This information ranges from the system time and date to system hardware settings for your computer. The CMOS will…
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C. A cloud service Cloud services refer to a wide range of services delivered on-demand to companies and customers over the internet. They provide easy, affordable access to applications and resources without the need for internal infrastructure or hardware. All…
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Answer: a) markup In describing the content and structure of documents, the kind of language used is called a "markup" language. Parsing language is used when analyzing or converting data strings into different types of data. Validation is used to…
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Answer: False IP address or Internet Protocol address is a unique address assigned to every individual device — whether mobile or computer device — that is connected to the internet. It is a means through which each internet-based device can…
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Answer: 2 The Paintbox Era was the period of digital arts — between 1986 and 1996 — when computer programming was no longer the big deal. This era ushered in new paint technology which included Photoshop. It was also during…
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Answer: B. Ultrabooks. Ultraportables are a group of laptop computers that are lightweight, slim, and usually have higher processing speed and storage capacity than regular laptop computers. Ultrabooks conform to Intel's standards, and they have been designed to serve as…
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Answer: E. MYSQL MYSQL is a data-based programming language that is used to manipulate the data in the databases. Javascript is a client-side programming language. PHP is a server-side programming language Ruby is a programming language that can be used…
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Answer: A. Neglect to initialize the loop control variable prior to entering the loop body Failing to assign initial values (initialization) to the loop control variables (as well as other variables) is a common problem most programmers often make. It…
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Answer: B. Self-documenting. When a constant that is in use has been named (that is it has become known by an identifier), it becomes a self-documenting code. This means that it begins a sequence of programming languages that can be…
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Answer: D. All of the above. To begin designing physical files and databases, all of the above options need to be put in place.
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Answer: C. Computer file. A nonvolatile storage device is one that can retain information even after power is cut off. The computer file meets that criterion.
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Answer: B. HAS-A relationship. The HAS-A relationship refers to a composition relationship that makes provision for the use of random variables to draw deductive reference to other objects. It is a composition relationship that has proved to be invaluable when…
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Answer: A. Opacity. Opacity as a CSS3 property refers to the degree of transparency of an element. At a value of one, the element takes the form of a solid, while the background is completely obscured. At values between 0…
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The CPU stores its computations in some internal systems referred to as "registers". They function as a temporary space for the CPU to store data. It is efficient, yet with very limited storage space. The CPU has different registers in…
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Communication in computers happens through programming languages. These are sets of commands and rules that instruct a computing device to carry out specific tasks. Typical examples include JavaScript, PHP, Python and HTML programming languages. The HyperText Markup Language (HTML) is…
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