REVIEW ESSAY
BYTEBACK/
REVIEW FOR QUIZ
OCTOBER 20, 2014
MS.TIWANA ANDERSON
BYTEBACK LESSON 1 AND
TAKE THE FINAL EXAM
45
WPM – 100
44-40
- 90
39-30
- 80
BELOW 30 - 70
WEEK AT A GLANCE:
Go to Microsoft Word
MONDAY
◦ DO NOW – LESSON 1 AND FINAL GRADE_______________
◦ YOU WILL CONTINUE TAKING NOTES FOR YOUR NEXT QUIZ ON FRIDAY
◦ REVIEW AND TURN IN ETHREE STUDENTS WILL BE CHOSEN TO ANSWER
THE LAST QUESTION ON THE ESSAY
◦ SSAY ON SCORPION (WILL BE ON TEST)
TUESDAY
YOU WILL FINISH TAKING NOTES
WEDNESDAY- THURSDAY:
COMPLETE QUIIZ AS A MAJOR GRADE – WEDNESDAY CLASSES WILL HAVE A
SUBSTITUTE
FRIDAY- REVIEW OF QUIZ, BRIEF INTRODUCTION OF
NEXT PROJECT, PLAY KAHOOT.IT ON HACKING
3
DO NOW:BYTEBACK FINAL EXAM

THOSE STUDENTS WHO NEVER HAVE TO DO
BYTEBACK.. UNLESS THEY CHOOSE TO
ANDY
KYLE
- 114 WPM
0 ERRORS
84 WPM
0 ERRORS
64 WPM
0 ERRORS
–
COREY–
WILEY
– 64 WPM
0 ERRIORS
GRADESPEED PROOF:
 EVERYONE
MUST SHOW ME THAT
THEY CAN GET INTO
GRADESPEED OR TELL ME WHY
NOT
 IF
YOU CANNOT, THEN YOU
MUST SIGN MY LIST AND GIVE A
REASON
TURN IN ESSAYS ON SCORPION

GET THE HANDOUT FROM THE TEACHER AND WRITE A FULL
ONE PAGE ESSAY SUMMARIZING THE MOVIE

LIST CHARACTERS

THE ROLES OF THE CHARACTERS

THE BASIS AND PLOT OF EPISODE 1

HOW CAN WE RELATE IT TO OUR CLASSWORK?

YOUR OVERALL OPINION OF THE SITCOM

HOW MANY STARS WOULD YOU GIVE THE SITCOM

IF YOU COULD HAVE THEM TO FIX A PROBLEM, WHAT WOULD
IT BE? WHAT WOULD BE THE PLOT OF YOUR EPISODE
REVIEW:
Computer System
◦A basic computer system is made up of two
parts: hardware (physical equipment that you
can touch) and software (programs installed
on the computer).
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Computer Networks
◦ Computer networks allow users to connect over
distances. They allow file sharing, hardware sharing,
and instant communication, making them a
necessary tool for offices, schools, and homes all
over the world.
◦ A computer network consists of several
components, each of which is important to making
the network function correctly as a whole.
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Network
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PARTS OF A
NETWORK
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Workstations
◦ These are known as desktop computers.
◦ The computer you use at home or school would be called a workstation in a
network.
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Servers
◦ Servers can look like desktop computers; however, most
do not look like your “normal” computer.
◦ Servers do not really need monitors, graphics and sound
cards.
◦ What they really do need is hard drives.
◦ In most schools, when you save your work, you are saving
to a server.
◦ By doing this, you can access your school
work from any computer that is on your
school network.
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Modems
◦ A modem is a device that enables computers to interpret data they receive from a
network or send data in the proper form along a network.
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Hubs
◦ A hub is sort of like a car radio. Every
computer that has that section of network
(like a radio station) can hear everything
that is being transmitted.
◦ All the computers that are connected to
that hub receive all the information that
goes through it.
◦ Usually, if you have a hub, you also have a
router.
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Switches
◦ A switch is more complex than a hub and works a lot like a two-way
radio. In a room full of people, only the person holding the other
radio can hear what is being said.
◦ It keeps track of which computers are where, and when something
comes in, it sends it only to that specific computer, not every
computer on that section of the network.
◦ It is more secure than a hub, and
faster than a hub, but not as powerful
as a router.
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Routers
◦ Routers work a lot like a telephone system. Each computer is
given its own unique number by the router. When information
comes into the router, it is then sent along to the correct
number—or in this case, computer.
◦ There are more options built into routers than there are available
to switches. A router can have the equivalent phone options of
call screening and caller ID. This is beyond a switch’s capabilities.
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Routers
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PEER-TO-PEER
NETWORKS
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Peer-to-Peer Network:
◦ This is a type of network where the computers in the network share resources
among each other.
◦ Every computer on this network is equal; all the computers run the same networking
software and file systems for sharing.
◦ Printers, scanners, and other external devices are shared by the machine they are plugged
into, otherwise known as managed by.
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Peer-to-Peer Network
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Pros for a Peer-to-Peer Network
◦ It is less expensive to set up a peer-to-peer network initially.
◦ You may already own the software needed to get a peer-to-peer network set up.
◦ This type of network does not require the installation of dedicated server hardware or
expensive security software.
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Cons for a Peer-to-Peer Network
◦ If you have a peer-to-peer network, you need to be aware that
shared resources, such as printers, place a special demand on
the computers in the network.
◦ Also, due to the nature of this type of network, all of the
computers on the network provide access to all of the
machine’s resources. The down side of this is that you can
unintentionally expose private files to all the other users on the
network.
◦ There is also no data security or protection from hackers,
viruses, etc.
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Peer-to-Peer Operating Systems
◦ In the peer-to-peer network operating system, each of the workstations has an
operating system that tells it how to store and share resources with the others.
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CLIENT SERVER
NETWORKS
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Ethernet
◦ Ethernet is a type of connection between computers that forms
the basis of most LANs.
◦ It also serves as one of the main methods for connecting a
computer or network to an Internet hub.
◦ The origin of Ethernet was the idea of connecting several
computers together in a network via coaxial cables.
◦ Since that time, it has evolved into a much more sophisticated
system that uses specialized Ethernet cables that connect to a
central hub or router in order to network several computers
together.
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Ethernet
Ethernet
Backbone
Ethernet
Hub
Ethernet
Switch
Ethernet
Switch
The Modern Ethernet Network
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LAN
◦ LAN stands for Local Area Network.
◦ A Local Area Network is a group of computers that are linked together that share
internet access, file access, applications, storage, and allow connected computers
to share printers and scanners.
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LAN Issues
◦ For a LAN to work properly, a router must be installed on the primary computer
that is connected to the Internet. Each computer connected to the LAN must
have an Ethernet card installed.
◦ The other issue with a LAN is that they are usually confined in a single building.
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WAN
◦ WAN stands for Wide Area Networks.
◦ A WAN is a collection of regular local area networks that are all interconnected to
form one giant network.
◦ Oftentimes, schools and even large companies will operate a WAN on premises.
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WANs Continued
◦ Advantages
◦ Flexible access: School networks can be created for
students to access files throughout the school district.
◦ Speed: Networks speed up the file sharing and saving
process.
◦ Disadvantages
◦ Expensive to install: WANs save money over time, but they
are expensive to set up at first.
◦ Time: WANs require maintenance of the network, which
costs both money and time.
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Token Rings
◦ Token rings work by sending data from one machine
to the next and so on around a ring until it ends up
back where it started.
◦ It also uses a special token passing protocol, which
means that a machine can only use the network
when it has control of the token.
◦ This ensures that there are no collisions because only
one machine can use the network at any given time.
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Token Ring
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Token Ring Issues
◦ In order for token rings to work,
◦ all computers must check for lost or duplicate tokens
◦ all connected computers must “vote” a new leader to create a new token
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Client/Server Operating Systems
◦ Client/Server setup allows the network to centralize functions and applications in
one or more file servers.
◦ File servers become the “heart” of this system and provide access to files and resources,
as well as providing security.
◦ Workstations have access to the resources to files on the file servers.
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Client/Server Operating Systems
◦ There are many different software programs available for this type of network.
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Client/Server Operating Systems
◦ Advantages
◦ This type of network makes it easy to install new technology and new elements.
◦ The server can be accessed remotely.
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Client/Sever Operating Systems
◦ Disadvantages
◦ Client/Servers depend on their servers. When they go down, the network will no longer
work.
◦ There is a hefty investment for a client/server network. It pays off in the long run, but it
requires money to set it up.
◦ Large networks will require dedicated staff to maintain a client/server network and to
work out the “kinks” when problems arise.
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NETWORK THREATS
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Hackers
◦ A computer hacker is someone who finds access into a computer’s security system
to break into another machine.
◦ Hackers usually collect information on the target computer and then try to gain access
into the computer system.
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Security Threats
◦ The most common threats are
◦ Spam: Unwanted commercial e-mail.
◦ Viruses: Can cause your computer to slow down or even destroy your hard drive.
◦ Adware/Malware: Software that gets installed on the computer. It can cause annoying pop-ups
or even steal information.
◦ Information Threats: Hackers steal important information, such as client information, bank
account numbers, credit card numbers, etc.
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Hackers
◦ Networks can take steps to protect their networks. The most common are
◦ Installing a firewall
◦ Advising caution on the net
◦ Making sure that the network is password
protected, especially if using a wireless network.
.
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