Upgrading to the basic questions of computer culture

2 network cards. 3 Not true.

4. Semiconductor memoryYes, memory modules are semiconductor originals, and external memory is core memory such as hard disks and floppy disks.

5That's right, ROM can only read, not write, how to use it as memory? How do I exchange data with hard disks and CPUs?

6 pairs, it should be 255, 225 should be a printing problem.

7 Some background programs are invisible on the taskbar, such as viruses.

11 a. 12 Save & Save As are two menus.

13 pairs. 14 does not belong and should be application software.

2 network cards. 3 Not true.

4 Semiconductor memory Static and dynamic MOS tube core memory is being replaced by semiconductor memory on miniature integrated circuit blocks. Although core memory has been phased out, some people still refer to memory as core out of habit.

5 RAM and ROM The former is random access, the latter one is read-only memory, hard disks are RAM, and optical discs are ROMs that can only be read but not written (some discs can be written once, and some can be written many times).

6 to 255

7 C of the foreground you must have thought it was an app.

11 a.

12 You can save it as much as you want, there is a dialog box asking you.

13 pairs. 14 does not belong to it as an application software.

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Gansu college promotion exam computer basic knowledge (5) socks bush no.

49. The communication medium is divided into two categories, namely wired medium and wireless medium, and the return line medium includes twisted pair, coaxial cable and optical fiber cable.

50. In the current network system, due to the size of the network coverage area, the different technical conditions and the working environment, it is usually divided into three types: wide area network, local area network and metropolitan area network.

51. A computer that provides shared resources in a local area network and manages these resources is called a server.

52. The Chinese name of hub is hub.

53. The basic purpose of establishing a computer network is to realize data communication and data sharing.

54. The indicator that indicates the reliability of data transmission is the bit error rate.

55. The IP address represented by the character feature name (also known as the address of the IP name) includes four parts: the computer name, the organization name, the network name, and the country name.

56. The LAN mainly has three characteristics: small coverage, fast transmission speed and low data error rate.

57. A modem is a device that converts digital signals and analog signals.

58. The third layer of the OSI reference model from low to high is the network layer.

59. According to the bandwidth, the computer network can be divided into broadband network and baseband network.

60. Among the many factors that determine the performance of the network, the most critical one is the network operating system.

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