CS 1308 Computer Literacy and the Internet

Final Exam Review

Exam FormatApproximately 140 Total Points

70 Points Multiple Choice 25 Points True or False30 Points Short Answer16 Points Matching

Similar to lab homework and previous exams

Note: These values are approximations.

Example Short AnswerWhy is it important to digitize information?

Example Short AnswerIf you have a network connection that can

transmit at 300 Mbps, about how long would it take to download a file that is 2 GB?

Example T/F problemT F A Wii controller would be considered

an input device.

Example Multiple ChoiceHow many bits are in a byte?A) 4B) 8C) 10D) 16E) 256

What is a Computer?

25 PointsAll information is digital

The more bits you have, the more different things you can represent

Know the difference between a “bit” and a “byte”2bits is a formula for determining the number of things

you can representVon Neumann Architecture

Data and instructions stored in memoryShould be able to draw it (with labels)

MemoryRAM

What is a Computer (cont.)Input/Output

Secondary storageWhat are input and output devices. Be

able to give examples.Central Processing Processor

Fetch-decode-execute cycleInstruction sets, machine language (what

are they?)Only the sections of chapters covered

in class

Networks

35 PointsAnalog vs. Digital

What is a modem?Bandwidth

Given a speed, calculate transmit timeBasic Terminology

Ethernet vs.Token RingLAN, WAN, packet, router, client-server

The internetTCPIPProtocols

HTTP, FTP

Chapter 15 (cont.)Internet Applications

What is the difference between a LAN and a WAN?Broadcast vs. packet forwardingWhat is the difference between the WWW

and the Internet?World Wide Web

TerminologyHTMLHTTPBrowser

Chapter 15 (cont.)E-mail

SMTPPOP3FTP

EncryptionKnow how public key encryption works for

sending secure messages

Building the CPU3 Points

Boolean logic (AND, OR, NOT)Gates, circuits, truth tables

Truth tablesKnow what they are

Putting it All Together

15 PointsAll information is digital

The more bits you have, the more different things you can represent

2bits is a formula for determining the number of things you can represent

Von Neumann ArchitectureData and instructions stored in memory and

logically the sameShould be able to draw it (with labels)

MemoryRAM

Store and FetchCache

Putting it All Together (cont.)Input/OutputSecondary storage

Much slower than RAMWhat are input and output devices. Be able to give

examples.Central Processing Unit

Control Unit and Arithmetic/Logic UnitInstruction sets, machine language (what are they?)Fetch-decode-execute cycleProgram Counter (PC)/Instruction Pointer

(IP)/Accumulator (ACC)Registers

Why might more RAM make your computer run faster?

Building Software5 PointsPhases of development

Requirements gatheringWriting SpecificationsWriting the CodeTestingMaintenance and Support

The longest of the phasesHigh-level Language

Closer to EnglishCompiler

Converts a high level language program to machine language for a particular computer.

System Software and File Systems15 Points

Operating systemsBasic Input/Output (BIOS)What are the main functions of the OS?What resources does the OS manage?Know some of the names of the main Operating

Systems (Windows, Mac, Unix, Linux)File Systems

File Types Text vs. Binary

File protection Files need to be world readable to be shared on the web

Directory Trees Absolute vs. Relative Paths

o Current directory “.”o Parent Directory “..”

Digital Audio6 Points

What is sound?Analog vs Digital representation of soundWhat is sampling?

Sampling rate (44.1 kHz)Sampling depth (bits per sample, e.g. 16 for CD

quality)File size of sampled file

MPEG CompressionWhat is it?What factors influence compression?

Be able to estimate the size of a file based on the sampling rate and bit depth.

Digital Images6 Points

What is a pixel?Digital representation of imagesResolutionColors

How many bits per pixel?24 bit true colorSampling depth (bits per sample, e.g. 16 for CD quality)RGB color values

Digital TelevisionHDTV

What levels of resolution are considered HD? What are the different kinds of technology used to project HD?

Information Systems20 points

SpreadsheetsCellsValuesFormulas

=A1+B1….common form of a formula IF, SUM, AVERAGE

Concepts from homework assignmentDatabases

Relational Databases Information stored in Tables Keys Relationships Every field should have just one piece of data and no data

should be duplicated Structured Query Language (SQL) used to add, modify,

delete database content

Social Issues0 points

PrivacyEncryption

Know how public key encryption works for sending secure messages

Dangers of Large DatabasesDMCAWhat is the advantage of digital over analog

versions of information? Are there any disadvantages?

Homework Assignments15 points

You will NOT have to do a circuit diagram or truth table.

Do each assignment and understand what you did.Remember something about the assignment details. For

example, “I imported a plain text file into Google Docs.”Remember what tools you used for what task.

You will not have to know the details of what key or menu item to use for a specific task.

Do each assignment and understand what you did.Remember something about the assignment details. For

example, “I had to figure out the mileage by car and by foot to my elementary school.”

Remember what tools you used for what task.You will not have to know the details of what key or menu

item to use for a specific task.

How to StudyLook at old exams.Do the lab assignments (especially the

Spreadsheet assignment).Know the vocabulary and acronyms, what

they stand for and what they mean.SLEEP!!!

What to bringPencils and erasersWe will provide scratch paperYou can use a calculator, but leave the cell

phones in the bag!Hint: Take the exam backwards. Many times

questions from the back of an exam will help with questions at the beginning.