Ocr Gcse Computer Science Paper 1 |229 Questions| With Correct Answers.

how many megabytes in a gigabyte? {Ans: 1024 (1000 in calculations)}what protocol is in charge of packet switching? {Ans: internet protocol}what are the properties of ROM? {Ans: it's a memory chip, non-volatile (stores data without power), primary storage (directly accessed by the CPU), fast access rates}what is encryption software? {Ans: facilitates the scrambling of data before it's sent across a network, so the data is unreadable if intercepted. encryption uses an encryption key to encrypt and decrypt the data}what are the advantages of 2.4GHz wi-fi? {Ans: has a greater range so can serve devices across a wider area, better at getting through solid objects/walls}what three factors affect network performance? {Ans: bandwidth, latency, errors in transmission}what are the email protocols? {Ans: POP, IMAP, SMTP}what are the 5 major roles of the operating system? {Ans: memory management, peripheral management, multi-tasking, security, user-interface}what is hosting? {Ans: a host is a web server that hosts one or more websites, if a computer has a number of web servers dedicated that hosts a number of different websites for other companies, this is called hosting}what is significant about low wages and long hours? {Ans: devices are