Ecs 15 Introduction to Computers Instructor: Liu Name
Date 30.06.2017 Size 24.47 Kb. #22275
ECS 15 Introduction to Computers
Instructor: Liu
Name:
Student ID #:
Midterm Exam: Oct. 31, 2014
Duration: 50 Minutes
The exam is closed book . However, you may refer to one sheet of A4 paper (double sided) of your own notes.
No calculator, no cellphone, no laptop , no electronic device.
There are three problems in total.
The total is 100 points.
Good Luck!
Do not write in this box.
Question
1 (20)
2 (54)
3 (26)
Total (100)
Points
True or False (2 points each).
Disk fragmentation occurs when files can no longer be written in contiguous clusters on the hard disk. TRUE
ALU uses circuits to execute instructions. TRUE
There are about a million of different instructions a typical PC can perform. FALSE
It is not safe to place a large magnet next to a hard drive. TRUE
Hexadecimal number 11 is larger than decimal number 11. TRUE
A CD can contain a larger amount of data than a DVD. FALSE
A hard drive using RAID 1 is more reliable than not using it. TRUE
The components and parts of the computer hardware are referred to as programs. FALSE
One byte can hold 256 different values. TRUE
Python is an example of machine language. FALSE
Multiple choices with one correct answer (3 points each).
Which represents the largest set of characters? UNICODE
ASCII
BIOS
Unicode
VLSI
The part of the CPU that does mathematical processing is called the _________.ALU
Control unit
ALU
Microprocessor
VLSI
Which of the following is considered one of the most important technology advances that enables the mass production of microprocessor? IC Design
Developing Vista
IC design
BIOS
RAM
What action would be best to completely destroy private information from a hard disk? FORMAT
Put all files in the Trash/Recycle bin and empty it
Delete the file
Do a full format of the disk
Defragment the disk
In modern computers, there are ______ transistors in a single die. D
A few thousands
A few hundreds of thousands
A few millions
A few hundreds of millions
The binary representation of 33 is: A
100001.
101011.
100000.
100010.
Which binary number is the number right AFTER the binary number 1011? A
1100
1010
1011
1011
From the highest to the lowest capacity (size), which order is correct? B
Cache, hard drive, memory
Cache, memory, hard drive
Hard drive, memory, Cache
Hard drive, cache, memory
Which of the following are not in the boot process? B
Memory test
Load MS Office
POST
Load operating system
1GiB is B
2^40 Bytes
2^30 Bytes
2^23 bits
8 * 2^40 bits
Which of the following is an open-source operating system? D
Mainframe
MAC OS
Windows XP
Linux
Which of the following are not on a CPU? D
Register
Control unit
ALU
RAM
A typical hard drive in today’s desktop has the following storage space C
1MB
1GB
1TB
1KB
As opposed to the analog counterpart , which of the following is NOT true about a digital recording? D
Can be reproduced without loss
Can be edited
Can be shared in the Internet
Can be identical to the original analog counterpart
Which of the following is not an output device? A
Keyboard
Printer
Haptic devices
Monitor
A computer program that allows the operating system to communicate with a device is called a: D
Communicator
Enabler
Device pilot
Driver
Which one of the following format is the most popular for photography?:B
MP3
JPEG
PNG
GIF
The following command is mostly likely an example of ___? B
ADD 40, 60, 2040
Python command
Assembly language
Machine language
None of the above.
Short questions (26 points).
(6 points)Name three major functionalities of a modern operating system. One example is process management. (2 points each)
Memory Management
Managing Disk and File System
Managing Input and Output
(4 points) Name two operating systems on mobile devices. (2 points each)
Android
iOS
Windows Phone 8
(6 points) How large is a one-minute telephony-quality sound file? The sample rate is 8000Hz and each sample is saved using 8 bits. Telephony-quality sound is mono (not stereo). Write down the equation.
8000*8*60 (bits)
(6 points) The computer freezes. Name two possible reasons and one possible action (2 points each).
Reason
1. Computer thrashing.
2. Crashing of an Application.
Action:
Restart the Computer
(4 points) Connect the corresponding actions with outcomes.
CTRL +C (or Command +C) (Copy)
Switch between open programs
Tab (move to next box)
Windows program, copy
ALT +Tab (or Command +Tab)
(Switch Between Open Programs)
Highlight a word
Double click
(Highlight a Word)
Web, move to next box
Share with your friends:
The database is protected by copyright ©ininet.org 2024
send message