A+ answers | Computer Science homework help

Q1. The ____ discipline includes activities that verify correct functioning of infrastructure and application software components and ensure that they satisfy system requirements.   a. architecture   b. design   c. testing   d. implementation

Q2. The ____ discipline is the set of activities for determining the structure of a specific information system that fulfills the system requirements.   a. design   b. requirements   c. modeling   d. architecture

Q3. Developers of application software for technical areas, such as robotics, flight navigation, and scientific instrumentation, typically have degrees in computer science or some branch of engineering.   a. true   b. false

Q4. The ____ is a well-established organization with a primary emphasis on computer science.   a. Association for Computing Machinery (ACM)   b. Institute for Electrical and Electronics Engineers (IEEE)   c. Oxford Computer Society (OCS)   d. International Standards Organization (ISO)

Q5. Given the rapid pace of change in computer technology, a manager must have a broad understanding of current technology and _____.   a. future technology trends   b. integration standards   c. best practices   d. industry standards

Q6. A ____ is a program that translates instructions in a programming language into CPU instructions.   a. compiler   b. linker   c. program translator   d. parser

Q7. Workstation hardware capabilities depend on the resources being shared and the number of simultaneous users.   a. true   b. false

Q8. The ____ software layer has utility programs used by system management and application programs to perform common functions   a. system management   b. system services   c. machine independent   d. machine dependent

Q9. ____ signals can carry more data than electrical signals.   a. Mechanical   b. Digital   c. Optical   d. Quantum

Q10. In a modern digital computer, data is represented by groups of ____.   a. qubits   b. photons   c. bits   d. waves

Q11. The CPU contains a few internal storage locations called ____, each capable of holding a single instruction or data item.   a. the ALU   b. registers   c. shifters

  d. the compiler

Q12. Early mechanical computation devices were built to perform ____.   a. text processing   b. mathematical simulation   c. repetitive mathematical calculations   d. repetitive mechanical operations

Q13. Hexadecimal numbering uses ____ as its base or radix.   a. 2   b. 8   c. 10   d. 16

Q14. A(n) ____ is a set of related data values.   a. pointer   b. list   c. array   d. record

Q15. Scientific and floating-point notation is far more complex than integer data formats.   a. true   b. false

Q16. A(n) ____ is a data structure that uses pointers so that list elements can be scattered among nonsequential storage locations.   a. array   b. queue   c. linked list   d. stack

Q17. The data types a CPU supports are sometimes called ____ data types.   a. user   b. complex   c. primitive   d. limited

Q18. In the decimal numbering system, the period or comma is called a ____.   a. place holder   b. division point   c. marker point   d. decimal point

Q19. Real numbers are represented in computers by using ____.   a. integer notation   b. floating-point notation   c. packed values notation   d. complementary notation

Q20. The ALU component of the CPU moves data and instructions between main memory and registers.   a. true   b. false

Q21. Traditional bus interfaces are too slow and power hungry to provide sufficient data transfer capacity between many processors or between processors and primary storage.   a. true   b. false

Q22. The operand of a CPU instruction cannot contain the location of a data item.   a. true   b. false

Q23. With bit strings, NOT treats each bit in the bit string as a separate Boolean value.   a. true   b. false

Q24. A ____ instruction causes the processor to depart from sequential instruction order.   a. MOVE   b. COMPARE   c. BRANCH   d. HALT

Q25. A ____ performs specific tasks that can be counted or measured.   a. benchmark program   b. metric program   c. compiler   d. system program

Q26. A(n) ____ directs the CPU to route electrical signals representing data inputs through predefined processing circuits that implement the appropriate function.   a. operation   b. process   c. instruction   d. cycle

Q27. To increase capacity per platter, disk manufacturers divide tracks into two or more zones and vary the sectors per track in each zone.   a. true   b. false

Q28. The surface area allocated to a bit is called the ____.   a. bit density   b. surface density   c. areal density   d. object density

Q29. The ____, a newer packaging standard, is essentially a SIMM with independent electrical contacts on both sides of the module.   a. double inline memory module   b. dual inline package   c. surface mount package   d. zero-insertion force package

Q30. Magnetic tape and disk are considered volatile storage media.   a. true   b. false

Q31. A ____ is a CPU cycle spent waiting for access to an instruction or data.   a. wait state   b. hold state   c. purge state   d. clock state

Q32. ____ is the time required to read the second of two adjacent sectors on the same track and platter.   a. Track-to-track seek time   b. Rotational delay   c. Sequential access time   d. Average access time

Q33. ____ is the most important characteristic differentiating primary and secondary storage.   a. Capacity   b. Density   c. Transfer rate   d. Speed

Q34. HTH switching time is the most important component of access time.   a. true   b. false

Q35. The ____ governs the format, content, and timing of data, memory addresses, and control messages sent across the bus.   a. bus clock   b. bus size   c. bus protocol   d. bus master

Q36. When three cache levels are in use, the cache farthest from the CPU is called a ____ cache.   a. level zero   b. level one   c. level two   d. level three

Q37. Until the 2000s, system buses were always constructed with serial electrical lines.   a. true   b. false

Q38. As buffer size increases above ____ bytes, CPU cycle consumption decreases at a linear rate.   a. 4   b. 8   c. 12   d. 16

Q39. The OS is the best source of file access information because it updates information dynamically as it services file access requests.   a. true   b. false

Q40. A ____ is a reserved area of main memory accessed on a last-in, first-out (LIFO) basis.   a. stack   b. queue   c. chain   d. heap

Q41. In most computers, an I/O port is a ____.   a. system address   b. memory block   c. network device   d. memory address

Q42. Devices with low data transfer demand can use a single lane, and devices with higher requirements can increase their available data transfer rate by using additional lanes.   a. true   b. false

Q43. Most portable data capture devices combine a keyboard, mark or bar-code scanner, and wireless connection to a wired base station, cash register, or computer system.   a. true   b. false

Q44. Phonemes sound similar when voiced repetitively by the same person.   a. true   b. false

Q45. ____ devices combine optical-scanning technology with a special-purpose processor or software to interpret bitmap content.   a. Optical image recognition   b. Optical character recognition   c. Optical character reproduction   d. Optical image resolution

Q46. Bar-code readers use ____that sweep a narrow beam back and forth across the bar code.   a. scanning LEDs   b. high-intensity lamps   c. high resolution CCDs   d. scanning lasers

Q47. Continuous speech is a series of nonstop interconnected phonemes.   a. true   b. false

Q48. ____ is the process of recognizing and responding to the meaning embedded in spoken words, phrases, or sentences.   a. Voice recognition   b. Pattern recognition   c. Speech recognition   d. Natural recognition

Q49. ____ output is only able to generate one frequency (note) at a time.   a. Stereophonic   b. Monophonic   c. Polyphonic   d. Monosyllabic

Q50. The most common display surfaces are paper and flat panel displays.   a. true   b. false