Q&A Hero

Physic

Q: A star topology connects each network device to many other network devices.
Q: A host computer is any computer that provides services to network users.
Q: Star, bus, ring, and tree are all examples of network topologies.
Q: Local Area Networks (LANs) are confined to a single building.
Q: Because of the risks of unauthorized access and viruses, most businesses opt not to network their computers.
Q: Bob Metcalfe first described a communications system model in 1948.
Q: A communications network is the combination of hardware, software, and links that transport data.
Q: ______________________________ is the memory type that holds portions of the operating system and application programs that are waiting to be stored, processed, or printed.
Q: Lab tests called ____________________ are performed to gauge overall processor speed.
Q: ______________________________ is the company whose processors are the chief competition to Intel's processors.
Q: Social security numbers, addresses, and names are all examples of ____________________ data.
Q: A series of 8 bits is called a(n) ____________________.
Q: A(n) ____ utility rearranges files so that they are stored in adjacent clusters.a. defragmentation c. accessibilityb. file management d. formatting
Q: Each storage medium contains its own ____ file, which lists the location of each file.a. allocation c. sectorb. MFT d. index
Q: Most versions of the Mac OS use the ____ file system.a. FAT c. HFSb. MFT d. Ext2fs
Q: ____ files are stored in noncontiguous clusters.a. Defragmented c. Displacedb. Fragmented d. Clustered
Q: You can do all of the following to folders, EXCEPT: ____.a. rename c. deleteb. copy d. defragment
Q:
Q: Utilities that help you find information in your files and folders are called ____ search tools.a. Windows c. desktopb. File management d. Spotlight
Q: Finder and Spotlight are examples of ____.a. file management utilities c. data filesb. dialog boxes d. application software
Q: File size is usually measured in ____.a. bytes c. megabytesb. kilobytes d. Any of the above
Q: Files you delete from your hard disk are sent to the Windows ____. a. Trashcan b. Transfer Station c. Recycle Bin d. None of the above; they are permanently deleted from the hard drive
Q: In graphical file managers, folders are used to represent ____.a. file specifications c. filesb. subdirectories d. file locations
Q: The main file directory of a disk is called the ____ directory.a. root c. folderb. sub d. network
Q: A program's help file or dictionary is an example of a(n) ____ file.a. support c. applicationb. configuration d. executable
Q: Filename extensions indicate the ____ file format.a. original c. nativeb. digital d. conventional
Q: The ____ is the coding scheme and arrangement of data in a file.a. data representation c. configurationb. filename d. file format
Q: Which of the following is NOT true about filename conventions for the Windows operating system? a. Spaces and numbers are allowed b. Any filename is allowed c. Filenames cannot be longer than 255 characters d. Filenames are not case sensitive
Q: If an ad specifies that a computer has these specifications: "3 GB 533 MHz SDRAM (max. 5 GB)," you know that the speed is ____.a. 3 GB c. SDRAMb. 533 MHz d. 5 GB
Q: ____ memory makes the biggest difference in a computer system's operations.a. CMOS c. RAMb. ROM d. virtual memory
Q: In RAM, electronic parts called ____ hold the bits that represent data.a. capacitors c. buffersb. waiting rooms d. chalkboards
Q: As shown in the above figure, where are the results sent before they are output or stored?a. registers c. RAMb. accumulator d. control unit
Q: As shown in the above figure, which step happens first in the ALU?a. Results are sent to RAMb. Data is placed in the accumulatorc. Data is held in the registersd. The control unit signals the operation to be performed
Q: Most PC processors use ____ technology.a. ALU c. CISCb. RISC d. DIMM
Q: Which of the following is NOT true about cache? a. L1 and L2 cache are located on the processor chip. b. Cache capacity is typically measured in kilobytes. c. A processor can access data from its cache faster than from elsewhere on the system board. d. The amount and location of cache memory both affect performance.
Q: The pace for executing instructions is set by the ____.a. system timer c. control unitb. instruction set d. processor clock
Q: The ALU uses ____ to hold data that is being processeda. cache c. registersb. RAM d. accumulators
Q: Which of the following is true about dual core processors? a. A computer's operating system and software should be optimized to use them. b. They use RISC technology. c. They are much slower. d. They perform tasks one at a time.
Q: All processors have two main parts: the control unit and the ____.a. cache c. ALUb. instruction set d. CISC
Q: Using ____ technology, a processor can begin to execute a second set of steps before it completes the first instruction.a. pipelining c. CISCb. serial processing d. cache
Q: ____ introduced the first processor in 1971.a. Apple c. AMDb. IBM d. Intel
Q: DIMMs, PGAs, and DIPs are all examples of ____.a. chip packages c. system unitsb. processors d. motherboards
Q: The main system board of a computer is called the ____.a. integrated circuit c. processorb. motherboard d. microchip
Q: Which of the following is NOT another term for integrated circuit?a. computer chip c. chipb. microchip d. compuchip
Q: The figure above shows a sample of ____ code.a. Extended ASCII c. characterb. Unicode d. numeric
Q: A ____ is one binary digit.a. character c. byteb. bit d. None of the above
Q: The part of the file that is stored with the file, read by the computer, and that indicates what code was used to represent the file data is called the file ____.a. extension c. representationb. format d. header
Q: ____ is a type of code used to represent character data.a. ASCII c. EBCDICb. Unicode d. All of the above are examples
Q: Letters, symbols, and numerals are examples of ____ data.a. numeric c. characterb. binary d. digital
Q: The ____ system uses 1s and 0s to represent data.a. Morse code c. ASCIIb. binary d. data representation
Q: Tracks and sectors on a disk are each assigned a letter.
Q: Because of the index file, storing files in nonadjacent clusters does not affect performance.
Q: When you delete a file from the directory, it is removed from the clusters on the disk.
Q: When you retrieve a file, the operating system uses the index file to find the file's location on the disk.
Q: When you save a file, your file system rearranges clusters in order to store the file in sequential clusters.
Q: Each storage medium contains its own index file.
Q: The Mac OS operating system uses the FAT32 file system.
Q: File systems keep track of which clusters are empty and which ones hold data.
Q: On floppy disks, one or more storage tracks spiral out from the center of the formatted disk.
Q: Formatting a storage medium divides it into tracks and sectors.
Q: When you receive a storage medium, typically you must format it before using.
Q: When you move a file or folder using a file management tool, it is placed in the new location and a copy remains in the old location.
Q: To rename a file you change the file extension.
Q: Once a device or object has been expanded in the left pane of Windows Explorer, it is preceded by a minus-sign.
Q: In Windows Explorer, clicking a plus sign next to an icon displays the item's contents in the right pane.
Q: In Windows Explorer, the folders and files contained in the currently selected device or driver are shown in the right pane.
Q: In Windows Explorer, the minus-sign next to a folder means that it does not contain any files.
Q: Mac OS uses a file management tool called Explorer.
Q: Internet Explorer is the Windows file management utility.
Q: Most application software allows you to perform some file management tasks, such as designating a storage location for a saved file.
Q: In Mac OS, subdirectories of a disk are represented as folders.
Q: When a file is sent to the Windows Recycle Bin it is permanently deleted from the hard disk.
Q: A file's location on the disk is defined by a file specification.
Q: An operating system contains a list of files, called a root.
Q: Windows filenames are case sensitive.
Q: A filename extension can tell you valuable information, such as the file format.
Q: A configuration file is the main executable file for a computer program.
Q: CMOS is more permanent than ROM.
Q: When you change a computer's configuration, you must also update the CMOS data.
Q: Virtual memory use helps to increase your computer's performance.
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