Chapter 6 - Networking Fundamentals

Question 1

list the four different networks from smallest to largest

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Answer 1

PAN
LAN
MAN
WAN

Question 2

how large is a MAN?

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Answer 2

spans a city or a large campus

Question 3

according to the book’s definition, tell me 2 things about servers

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Answer 3

they are a core component of the network

the provide a link to the resources necessary to perform any task

Question 4

tell me the most important resources

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Answer 4

printers and other peripherals
disk storage and file access
applications

Question 5

what does NOS stand for and what does it do?

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Answer 5

network operating system

controls the communication with resources and the flow of data across the network

Question 6

there are two models for network resource access. what are they?

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Answer 6

peer to peer

client server

Question 7

tell me the 5 primary topologies

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Answer 7

bus
star
ring
mesh
hybrid

Question 8

does a ring topology have a unidirectional path or a bidirectional path?

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Answer 8

unidirectional

Question 9

tell me the formula for calculating how many cables you’ll need in a full mesh topology

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Answer 9

(n(n-1))/2 where n is the number of computers in the mesh

Question 10

tell me the seven layers of the OSI model from top to bottom

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Answer 10

7. application
8. presentation
9. session
10. transport
11. network
12. data link
13. physical

Question 11

what does CSMA/CD stand for?

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Answer 11

carrier sense multiple access / collision detection

Question 12

what 5 factors do you take into account when evaluating a NIC?

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Answer 12

compatibility
performance
sending and controlling data
configuration
drivers

Question 13

for 2 computers to send and receive data, they have to agree on 5 things. tell me what they are.

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Answer 13

max size of data frame
amount of data sent before giving confirmation
time needed between transmissions
amount of time to wait before sending confirmation
speed at which data transmits

Question 14

at what layer of the OSI model to NIC drivers operate?

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Answer 14

the media access control sublayer of the data link layer

Question 15

tell me the 4 sections of a coax cable, going outside to inside

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Answer 15

outer insulation
wire mesh conductor
inner insulation
center wire

Question 16

of all the Coax RG types, all have a solid copper cable except for one in particular. what is that coax type and what cable type does it use?

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Answer 16

RG-58 AU (Thinnet)

stranded copper

Question 17

what’s the difference between thicknet and thinnet?

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Answer 17

thicknet required vampire taps and thinnet uses BNC connectors instead

Question 18

BNC, T connector, terminator and F connector. where do you find these things?

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Answer 18

BNC, T, and terminator are part of the thinnet (therefore internet)

F connector is for cable TV

Question 19

tell me the two types of twisted pair. which one will you find in the plenum of a building?

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Answer 19

STP (shielded)

UTP (unshielded)

Question 20

there are 8 categories of unshielded twisted pair cables. run through them and tell me either what they’re used for or what their speed is

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Answer 20

1 - voice only
2 - 4 Mbps
3 - 10 Mbps
4 - 16 Mbps
5 - 100 Mbps
5e - 1 Gbps
6 - 10 Gbps
6a - 10 Gbps

Question 21

run through the colors of a patch cable (568A)

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Answer 21

white/green
green
white/orange
blue
white/blue
orange
white/brown
brown

Question 22

now run through the colors of the cross over cable (568B)

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Answer 22

white/orange
orange
white/green
blue
white/blue
green
white/brown
brown

Question 23

you have a choice between multimode fiber and single mode fiber. which one will you use for long distance and what’s the max that distance can be?

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Answer 23

single mode

40 kilometers

Question 24

you are looking at fiber optic connector types. which one is the square one?

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Answer 24

the SC, subscriber connector

Question 25

what fiber optic connector is the most widely used?

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Answer 25

the straight tip (ST)

Question 26

by default, are most firewalls configured as default deny or implicit deny?

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Answer 26

default deny