Unit 3: Networking

Question 1

This is the hardware address of a computer/com. system. Hard Encoded in Network Chips. This is a unique address that allows for communication in local networks without IP addresses.
Ex: 00:0a:95:9d:68:16

Answer 1

Media Access Control Address (MAC Address).

Question 2

First 3 Hex Values of a MAC Address (00:0a:95)

Answer 2

Organizational Unique Identifier (OUI)

Question 3

Last 3 Hex values of a MAC Address (9d:68:16)

Answer 3

Unique ID of Hardware

Question 4

A “Dotted Quad Format” address with the values 0-255 in one quad

Answer 4

IP Address (IPv4)

Question 5

A “communication endpoint” at the software level

Answer 5

Network Port

Question 6

These kinds of ports are assigned and controlled. (0-1023)

Answer 6

“Well Known Ports”

Question 7

These ports are not assigned or controlled, but instead can be registered to prevent duplication

Answer 7

Registered Port

Question 8

Analogy: A street address is like a…

Answer 8

IP Address

Question 9

Analogy: An apartment/room in a house on the address

Answer 9

Network Port

Question 10

Analogy: Resident of the Apartment

Answer 10

Application/Program.

Question 11

Used for Internal Networks(Home routers, schools, etc). Not routable on internet/WAN

Answer 11

Private IP

Question 12

Ranges of Private IP

Answer 12

10.0.0.0 -> 10.255.255.255.255 172.16.0.0 -> 172.31.255.255 192.168.0.0 -> 192.168.255.255

Question 13

These are Unique Locally and Globally

Answer 13

IP Address

Question 14

Class A Range

Answer 14

0-127 (First Octet is Network, rest are Host Address)

Question 15

Class B Range

Answer 15

128-191(first two are Network ID, Final two are Host)

Question 16

Class C Range

Answer 16

192-223(Last Octet is host, first 3 are Network ID)

Question 17

Software that keeps track of internet traffic from LAN to/fro WAN. Allows multiple Private IP’s to use the same Public ID on WAN. Router Does this

Answer 17

Network Address Translation

Question 18

Way out of your local network and the way into the ‘next’ network (WAN/Internet).

Answer 18

Default Gateway

Question 19

IP address used to target all hosts on a network/subnet. Any info sent to this IP would go to all devices on the network.

Answer 19

Broadcast Network Address.

Question 20

Network management protocol used to automatically assign IP address and other network config. Info. to each device on a network. GIVES DEVICE AND IP, GATEWAY, DNS ADDRESS, ETC.

Answer 20

Dynamic Host Control Protocol (DHCP)

Question 21

Software created Network

Answer 21

Virtual Lan (VLAN)

Question 22

Controls flow of traffic by preventing unauthorized network traffic from entering/leaving a particular portion of the network.

Answer 22

Firewall.

Question 23

Provides RELIABLE, ORDERED, ERROR-CHECKED delivery of a stream of octets (bytes) between applications running on hosts communicating via IP Network. Gets data on the internet.

Answer 23

Transmission Control Protocol (TCP)

Question 24

When data is being delivered in the correct order, it will be…

Answer 24

Connection Oriented.

Question 25

Syn, Syn-Ack, and Ack are a part of this...

Answer 25

Three-Way-Handshake

Question 26

Synchronizes two or more connections (Bob talks to Alice)

Answer 26

Syn

Question 27

Response/Acknowledgement of Synchronize Packet. (Alice responds to bob and then brings up something else for bob.

Answer 27

Syn-Ack

Question 28

Acknowledgement, ready to go. (Bob received the info from Alice and is ready to go.)

Answer 28

Ack

Question 29

"Connectionless" Protocol that will send data faster but riskier than TCP. (Doesn't care if you get the data packet or not, will continue to stream the data).

Answer 29

User Datagram Protocol.

Question 30

Wi-Fi Hardware that allows a device to connect to a network

Answer 30

Wireless Access Point (WAP) or Access Point (AP)

Question 31

Name of Wi-Fi Network. You can turn off the broadcast as a security feature.

Answer 31

Set Service Identifier

Question 32

Confidentiality of Data for Wireless Network Security

Answer 32

Confidentiality of Data

Question 33

Basic Encryption

Answer 33

Wired Equivalency Privacy (WEP)

Question 34

More Secure Encryption

Answer 34

Wi-Fi Protected Access (WPA/WPA3)

Question 35

Only Lets certain physical devices on a network

Answer 35

MAC Address Filtering

Question 36

A "DUMB" device that connects computers together via Networking cables. Send traffic to all computers connected to this. Can cause congestion

Answer 36

HUB

Question 37

A "SMART" device, connects multiple devices together using Ethernet cables. Knows the Mac Address of the connected computers and can send data directly to whichever one(s) it needs to.

Answer 37

SWITCH

Question 38

Truly Smart, connects multiple networks together.

Answer 38

ROUTER

Question 39

Multiple Private IP's can connect through a single Public IP. Works with router, where it has an Inside IP (Private), and an Outside IP.

Answer 39

Network Address Translation.

Question 40

Used to transfer files between client/server (Port 21)

Answer 40

File Transfer Protocol

Question 41

text based network protocol that is used for accessing remote computers over TCP/IP networks like the Internet. (Port 23).

Answer 41

Telnet

Question 42

Early way to send emails (Port 25)

Answer 42

Simple Mail Transfer Protocol

Question 43

Unencrypted, includes Web, Web Pages, etc. (Port 80)

Answer 43

HyperText Transfer Protocol

Question 44

Encrypted replacement for Telnet (Port 22)

Answer 44

Secure SHell (SSH)

Question 45

Web Names to Address, Directory Look-Up Function. (Port 53).

Answer 45

Domain Name System (DNS)

Question 46

URL(Web Address) in the text.

Answer 46

Domain Name