See computer science 2076 edited Computer Security

See computer science 2076 edited Computer Security Questions and Answers [20] 1. Computer security [SLC 2067] [SLC 2069] [SLC 2070 S] [SEE 2073] [SEE 2074 U] [SEE 2075 S2] The security given to the computer for the protection of hardware, software and data from being lost or damaged due to accidental or intentional harm is known as computer security. The types of computer security are hardware security and software security. 2. Objectives of computer security a) Confidentiality refers to protecting information from being accessed by unauthorized parties. In other words, only the people who are authorized to do so can gain access to sensitive data. b) Integrity refers to ensuring the authenticity of information—that information is not altered, and that the source of the information is genuine. c) Availability means that information is accessible by authorized users. 3. Possible threats to computer security [SLC 2069 S] a) Human error c) Computer crime e) Natural disasters b) War and terrorist activity d) Hardware failure 4. Hardware security [SLC 2066] [SEE 2066 S] [SLC 2068 S] [SLC 2071 S] The securing hardware components of the computer system from being damaged or lost due to electrical voltage fluctuation, extreme temperatures, dust, high humidity or mechanical stress is known is hardware security. 5. Some of the hardware security measures [SLC 2064] [SLC 2065] [SEE 2067 S] [SLC 2070 S] [SLC 2071] a) Regular maintenance of computer hardware b) Fire detectors c) Insurance Policy d) Use grille in the windows and use lock in the door to protect from thieves e) Use power protection device to protect computer from power fluctuation. f) Use vacuum cleaner to clean the room and avoid dust g) Protect computer from rain water, moisture and other natural calamities 6. Software security [SLC 2065 S] [SEE 2066 S] The security given to the software and data from being lost or damaged due to accidental or intentional harm is called software security. Software prevents the data loss by a) Antivirus software can detect and remove virus from the computer. b) Scan disk checks folders, bad sector and other error of the disk and fix them. c) Software for backup helps in securing the information by keeping backup. 7. Some of the software security measures [SLC 2065] [SLC 2065 S] [SLC 2068] [SLC 2069] [SLC 2071 S] a) keep the backup copy of important data or software b) Scandisk c) Defragmentation d) use Password e) use antivirus software and update frequently f) use firewall to prevent virus. 8. Voltage regulator device A voltage regulator device is an electronic regulator device designed to automatically maintain a constant voltage