For each question, select the correct answer from the choices 11. Which of the following is both an input and output device a Printer B. Keyboard C. Touch screen D. Scanner [2]. The functions of the Central Processing Unit are ............ A. printing the results to users B. input the data to the computer C. Sending e-mail D. Executing program instructions Carrying out calculations 13). ............. Is the mastermind of the computer A Memory Unit B. Input Unit C. Output Unit D. CPU 141 Characters and symbols are represented as groups that consist of .......... Bits A. Two B. Seven C Eight D.1024 15). Which of the following devices do you need to be able to communicate with other computers using the telephone network? A. CD-ROM B. Modem C.Plotter D.Speakers [6]. Data and program instructions are temporarily held in ............ while the processor is using them. AROM B. CD-RW C.RAM D.hard drive 171. Computer system consist of four parts a)Hardware, Software, Data and User b)Mouse, keyboard, system unit and monitor c) Data, information, hardware and software. d)RAM, ROM, Hard-disk and Processor, [8]. are programs which users can make use of their practical life such as Microsoft office A. programming language B. application Software C. operating systems D. Networks [9]...... is a group of computers connected together but since it is spread over a wide area A. LAN B. MAN C. WAN D. CAN [10]. Which protocol of the following that enables users to exchange files over networks: A. TCP/IP B.TCP C.IP D. File Transfer Protocol Are usually fixed inside the computer case or as external devices a)Floppy Disk b)Hard Disk c)Compact Disc d) Desktop