Final Exam

Question 1

port number: FTP

Answer 1

20

Question 2

define: latency

Answer 2

how much time it takes for data packet to travel

Question 3

port number: POP

Answer 3

109

Question 4

OSI Model: Data Link datatype

Answer 4

Frames

Question 5

OSI Model: Physical datatype

Answer 5

Bits

Question 6

define: attenuation

Answer 6

reduction in the strength of a signal

Question 7

define: baseline

Answer 7

a snapshot of what is going on in the network

Question 8

define: CSMA/CA

Answer 8

how network devices respond when two devices encounter a data collision. prevent collisions before they happen

Question 9

OSI Model: Session datatype

Answer 9

Data

Question 10

define APIPA

Answer 10

protocol communication names

Question 11

define: frequency

Answer 11

cycles per second

Question 12

Single firewall

Answer 12

handles all traffic going to DMZ and internal network.

Question 13

OSI Model: Network datatype

Answer 13

Segments

Question 14

protocol: TELNET

Answer 14

command-line interface on a remote host

Question 15

POTS

Answer 15

standard land-line telephone service, every household

Question 16

OSI Model: Transport datatype

Answer 16

Data

Question 17

Authentication

Answer 17

ensures data came from valid source

Question 18

port number: DHCP

Answer 18

67

Question 19

protocol: STMP

Answer 19

sending e-mail messages between servers

Question 20

port number: HTTP

Answer 20

80

Question 21

RDP

Answer 21

remote desktop protocol to remotely connect to a computer

Question 22

protocol: POP

Answer 22

retrieve e-mail from a mail server

Question 23

Logical Topology

Answer 23

how devices appear connected to the user

Question 24

Environmental monitor

Answer 24

monitors area in a building where sensitive equipment is located

Question 25

port number: HTTPS

Answer 25

443

Question 26

OSI Model: Application datatype

Answer 26

Data

Question 27

port number: TELNET

Answer 27

23

Question 28

OSI Model: Physical device

Answer 28

Hub

Question 29

port number: SMTP

Answer 29

`25

Question 30

define: high availability

Answer 30

a concept in a network optimization, refers to ability to keep network with least downtime

Question 31

Authorization

Answer 31

verifies an entity has permission

Question 32

OSI Model: Data link device

Answer 32

Bridge, Switch

Question 33

dual firewall

Answer 33

The first firewall (the "front-end") allows traffic destined to the DMZ only. The second firewall ("back-end") only allows traffic from the DMZ to the internal network.

Question 34

protocol: FTP

Answer 34

used to transfer computer files from one host to another host over a TCP-based network, such as the Internet.

Question 35

define: CSMA/CD

Answer 35

how network devices respond when two devices encounter a data collision. deals with transmissions after a collision has occurred

Question 36

define: Scope

Answer 36

range of IPs

Question 37

define: noise

Answer 37

unwanted electrical or electromagnetic energy

Question 38

define: geosynchronous orbit

Answer 38

orbital mass that matches the earth's sidereal rotation period

Question 39

Physical Topology

Answer 39

The physical layout of devices on a network.

Question 40

protocol: DHCP

Answer 40

automatically provides an Internet Protocol (IP) host with its IP address

Question 41

port number: DNS

Answer 41

53

Question 42

Bottom to top: OSI Model

Answer 42

Physical, Data Link, Network, Transport, Session, Presentation, Application

Question 43

define: Leases

Answer 43

The IP address the client receives is only good either until the cliuent is rebooted or logged off

Question 44

define: Molinya Orbit

Answer 44

cover locations in farther regions

Question 45

OSI Model: Network device

Answer 45

Router

Question 46

define: Butt set

Answer 46

tests the connection of a phone

Question 47

protocol: HTTP

Answer 47

foundation of data communication for the World Wide Web

Question 48

OSI Model: Presentation datatype

Answer 48

Data

Question 49

protocol: HTTPS

Answer 49

secure communication over a computer network which is widely used on the Internet