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NEW QUESTION # 113
Which technology is characteristic of second-generation computing?
Answer: B
Explanation:
Second-generation computers, roughly from the mid-1950s to the early 1960s, are characterized by the replacement of vacuum tubes with transistors as the primary electronic switching device. Transistors were a major improvement because they were smaller in size, generated far less heat, used less electrical power, and were more reliable than vacuum tubes. This reduced maintenance needs and hardware failures, making computers more stable and suitable for wider organizational use. Performance also improved because transistors could switch faster than vacuum tubes, enabling quicker processing and more efficient operation.
During this era, computers also advanced in software support, with greater use of assembly language and the introduction of early high-level programming languages such as FORTRAN and COBOL. These developments made programming more practical and increased adoption in scientific calculations and business data processing. Microprocessors belong to a much later stage, artificial intelligence is typically linked to later generations, and nanotechnology is a modern fabrication concept. Therefore, transistors are the defining technology of second-generation computing.
NEW QUESTION # 114
Which component of an operating system allows the operating system to run applications?
Answer: B
Explanation:
The kernel is the core component of an operating system that enables applications to run by managing system resources and providing essential services. In Information Technology, applications do not directly control the CPU, memory, or hardware devices. Instead, they request services from the operating system through system calls, which are handled by the kernel. The kernel manages process creation and execution, memory allocation, multitasking, and communication between software and hardware. It also enforces protection and security boundaries so one program cannot easily interfere with another or with the operating system itself.
The user interface affects how users interact with the system, but it is not the component that actually runs programs. The file manager handles organization and access to files, and drivers allow the operating system to communicate with specific hardware devices, such as printers and network cards. Because the kernel controls process execution and resource management, it is the operating system component that allows applications to run.
NEW QUESTION # 115
A person is updating procedures for handling integer data within a database. Which value is an example of this data type?
Answer: D
Explanation:
Integer data is a numeric data type used to store whole numbers without fractional or decimal parts. In Information Technology and database systems, integers are commonly used for counts, quantities, identifiers, and values that naturally occur as whole numbers. The value "the number of baseball games in a season" is a count and is expressed as a whole number, making it a clear example of integer data. By contrast, 3.14159 includes decimal places and is typically stored as floating-point or decimal data rather than integer. A single keystroke is character data because it represents a symbol such as A or 7, not a quantity. Whether a bank account does or does not have money in it is a two-state condition and is best represented as Boolean data, such as true or false. Using correct data types improves storage efficiency, supports accurate validation rules, and helps ensure correct query behavior. Therefore, the correct example of integer data is the number of baseball games in a season.
NEW QUESTION # 116
What is one purpose of business continuity planning?
Answer: C
Explanation:
Business continuity planning defines how an organization will resume and sustain essential services after a disruption. In Information Technology, disruptions can include cyberattacks, power failures, natural disasters, hardware failures, and human error. A continuity plan documents roles, responsibilities, communication steps, alternative processes, and recovery procedures so operations can continue at an acceptable level. It typically includes priorities for restoring critical systems first, along with targets such as recovery time objective and recovery point objective. Preventive maintenance is important for reducing failures, but it is not the primary purpose of business continuity planning. Ethical policy consistency is part of governance and compliance, not continuity planning. Eliminating downtime for nonessential services is unrealistic and not a central goal; continuity focuses on maintaining or restoring critical functions, and nonessential systems may remain offline during recovery. Because the plan's purpose is to guide an organization in restarting services and operations after an incident, the correct answer is helping define how to resume services after a disruption.
NEW QUESTION # 117
A programmer needs to create a variable that holds the plus sign + for the addition operation. What is the name of the data type that should be used?
Answer: B
Explanation:
A plus sign is a single symbol, so the correct data type is character. In Information Technology and programming fundamentals, a character data type is used to store exactly one character, such as a letter, digit, punctuation mark, or operator symbol. Examples include A, 7, #, and +. This differs from a character string, which stores multiple characters together, such as words, phrases, or product names. Integer and floating- point types are numeric and intended for arithmetic values, not symbolic operators. In many programming languages and database systems, characters are stored using an encoding standard such as ASCII or Unicode, allowing symbols like + to be represented consistently. Selecting the correct data type is important for validation and storage: a character field can be constrained to length 1, ensuring the variable cannot accidentally store multiple symbols or text. Because the requirement is to store a single plus sign symbol, the appropriate data type is character.
NEW QUESTION # 118
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