Networking Midterm

Front 1

What does OSI stand for? As in OSI seven layer model

Back 1

Open Systems interconnection

Front 2

What are the 7 layers of the OSI 7 layer model in order?

Back 2

Layer 1 Physical
Layer 2 Data Link
Layer 3 Network
Layer 4 Transport
Layer 5 session
Layer 6 presentation
Layer 7 Application

Front 3

What does UDP stand for?

Back 3

Unshielded twisted pair

Front 4

Anything that moves data from one system to another, such as copper cabling, fiber optics even radio waves is part of the ___________ Layer, or the __#__ layer.

Back 4

Physical layer or the 1st layer

Front 5

The NIC is the ___________.

Back 5

Network interface Card

Front 6

The NIC operates on the ____________ layer which is layer #__________.

Back 6

Data link layer which is layer number 2.

Front 7

Every NIC contains a ____address.

Back 7

MAC

Front 8

What does mac Stand for, as in mac address.

Back 8

Media access control address

Front 9

A mac address is _____bits or ___ hex characters

Back 9

48 bits or 12 hex

Front 10

The first 6 digits of a mac address represent the number of _________________.

Back 10

The manufacturer

Front 11

What does OUI stand for? and what is it used for

Back 11

Organizationally unique identifier and it is used for mac addresses

Front 12

Which digits are the Device id?

Back 12

the last 6 digits of the mac address.

Front 13

Generally a single frame holes ____bytes.

Back 13

1500

Front 14

Frames are sent to ____ on the network.

Back 14

Everyone, but only the mac address that its addressed to receives it.

Front 15

The receiving system used ___________to verify that the data arrived intact.

Back 15

CRC Cyclic redundancy check

Front 16

The mac Address FF-FF-FF-FF-FF-FF is? and what does it do?

Back 16

The broadcast address, it sends out a frame requesting the other systems on the networks mac address and all the nic on the network reply

Front 17

Any device that deals with the mac address is part of the ________layer or # layer.

Back 17

Data link layer, or 2nd

Front 18

What is the LLC?

Back 18

Logical link controller

Front 19

What does the LLC do? t

Back 19

talks to the operating system, places data coming form the software into frames and creates the CRC on each frame. It is also responsible for incoming frames: processing the ones that are addressed to this NIC and erasing the ones that arent.

Front 20

The only layer that has sublayers is? and what are the sublayer?

Back 20

The data link layer has the sub layers LLC and the MAC.

Front 21

You can break a large network up into smaller networks called ___________.

Back 21

subnets

Front 22

What does TCP/IP stand for?

Back 22

Transmission control protocol/internet protocol

Front 23

An NIC's Logical address is its _____________.

Back 23

Ip address

Front 24

Anything that has to do with logical addressing work on the _____________layer or the # layer.

Back 24

Network layer or 3rd layer

Front 25

The _________layer is the last layer that deals directly with hardware.

Back 25

Network

Front 26

This layer has only one big job, it is the assembler/disassembler, it also initializes requests for packets that werent received in good order.

Back 26

The transport layer or layer 4

Front 27

What does layer 5 or the session layer do?

Back 27

The session layer initiates sessions, accepts incoming sessions, and opens and closes existing sessions.The session layer also keeps track of computer naming conventions.

Front 28

The ______ layer or # layer is incharge of converting data into formats that are readable by the system.

Back 28

Presentation layer or 6th layer

Front 29

Layer #, or __________layer, refers to the code built into all operating systems that enables network-aware applications.

Back 29

Layer 7 or application layer

Front 30

The way that cables and other pieces of hardware connect to one another.

Back 30

topology

Front 31

a single cable that connects all of the computers in a line is a _________ topology.

Back 31

Bus

Front 32

A _______topology connects all the computers on the network with a central ring of cable.

Back 32

Ring

Front 33

a network using bus topology needs a _______________ at each end of the cable to prevent a signal sent from one computer reflecting at the ends and creating unnecessary traffic

Back 33

termination

Front 34

Bus and ring topology worked well but suffered from the same flaw, which is.....

Back 34

The entire network stopped working if the cable broke at any point.

Front 35

_______topology uses a central connection for all computers on the network.

Back 35

Star

Front 36

Signalling topology is often known as ____________

Back 36

logical topology

Front 37

Any form of networking technology that combines a physical topology witha signalling topology is called a ______________________.

Back 37

Hybrid Topology

Front 38

Almost all wireless networks use 1 of 2 different topologies: __________ or _______________.

Back 38

Mesh or point to multi-point

Front 39

What is the formula for calculating the number of connections needed to make a fully meshed network given a certain number of computers.

Back 39

y(y-1)/2

Front 40

In a ____________topology a single system acts as a common source through which all members of the network converse.

Back 40

Point to multipoint

Front 41

In a _____________ topology 2 computers connect directly together with no need for a central hub or box of any kind.

Back 41

point-to-point

Front 42

All cables used in the networking industry can be catagoriezed in three distinct groups: ________,__________, and _________.

Back 42

Coaxial, twisted pair, and fiber optic.

Front 43

_____________cable contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braided metal shield.

Back 43

Coaxial

Front 44

Cable modems usually connect using _______cable.

Back 44

RG6

Front 45

STP stands for

Back 45

Shielded twisted pair

Front 46

UTP stands for

Back 46

Unshielded twisted pair

Front 47

Cat ratings are officially rated in ___________ indicating the highest frequency the cable can handle

Back 47

Megahertz (MHz)

Front 48

The maximum amount of data that goes through the cable per second is called the _____________.

Back 48

Bandwidth

Front 49

Telephones use __________ connectors and networks use ____________connectors.

Back 49

Phones= RJ-11 Networks= Rj-45

Front 50

Fiber optic cables that use LEDs are known as _______.

Back 50

Multimode

Front 51

Fiber optics that use layers are known as _________

Back 51

single mode

Front 52

The 3 main connector types for fiber optics are:

Back 52

ST, SC. LC

Front 53

The IEEE 802.3 standard is for what?

Back 53

Ethernet

Front 54

The IEE 802.11 Standard is for what?

Back 54

Wireless LAN/WLAN/wifi

Front 55

An electronic repeater- it interprets the ones and zeros coming in from one port and repeats the same signal out to the other connected ports.

Back 55

Hub

Front 56

Frames can carry up to ________ bytes.

Back 56

1500

Front 57

The frame check sequence is ethernets term for ________.

Back 57

CRC

Front 58

What does csma/cd stand for?

Back 58

Carrier access, multiple access collision detection

Front 59

A properly running average ethernet network has a maximum of ______% collisions.

Back 59

10

Front 60

In the name 10Base T the 10 Refers to?

Back 60

The speed 10mbps

Front 61

In the name 10Base T the word Base Refers to?

Back 61

They signalling type, baseband

Front 62

In the name 10BaseT the T Refers to?

Back 62

The type of cabling used, twisted pair

Front 63

10BaseT introduced the networking world to the ____________connector.

Back 63

RJ45

Front 64

What are the two ways to connect Hubs?

Back 64

an uplink port of a Crossover cable

Front 65

___________ enable you to connect 2 hubs together using a straight through cable.

Back 65

uplink Ports

Front 66

To connect more than 2 hubs you must ____________ you hubs.

Back 66

Daisy chain

Front 67

You can not daisy chain more than _____hubs.

Back 67

4

Front 68

A __________ reverses the sending and receiving pairs on one end of the cable.

Back 68

Crossover

Front 69

When using a crossover cable never connect 2 hubs by ______________.

Back 69

Their uplink ports

Front 70

A ____________ acts like a repeater or hub to connect 2 ethernet segments, but it goes one step beyond - it filters and forwards traffic between those segments based on the mac addresses of the computers on those segments.

Back 70

Bridge

Front 71

Bridges operate on which lvl of the osi networking model?

Back 71

2, the data link layer

Front 72

Whats the difference between a switch and a hub?

Back 72

switches forward packets based on mac addresses. hubs forward the frame to everyone

Front 73

True or false: when you use switches instead of hubs you still need to worry about csma/cd?

Back 73

False

Front 74

True or False: you can connect switches however you want.

Back 74

true

Front 75

There are only 4 Ethernet speeds what are they?

Back 75

10 megabit, 100 megabit, 1 gigabit, 10 gigabit

Front 76

only 10- and 100 megabit Ethernet may use a __________. Gigabit and 10 gigabit must use a ___________.

Back 76

hub, switch

Front 77

10 Base t4 uses _________ cable.

Back 77

cat 3

Front 78

100 base tx uses _________ cable.

Back 78

cat 5

Front 79

100BaseFX uses ________ cable.

Back 79

fiberoptic

Front 80

Most installations will use _______ in a place where UTP wont cut it.

Back 80

Fiber optic

Front 81

1000basecx uses __________ cable.

Back 81

twinaxial

Front 82

SFF connectors are

Back 82

Small form factor

Front 83

The first SFF connector was the ____________.

Back 83

MT-rj

Front 84

The second most popular SFF connector is the _____.

Back 84

LC