Extra notes

Question 1

What is DORA?

Answer 1

DHCP sessions use for step process known as DORA.

• Discovery
• Offering
• Request
• Acknowledge

Question 2

What does the discovery process do in DHCP?

Answer 2

The client computer broadcast out to a network in order to find Aa DHCP server.

Question 3

What does the offfering process do in DHCP?

Answer 3

The DHCP sever sends out a unicast “offering” of an IP address to a clients computer.

Question 4

What does the request process do in DHCP?

Answer 4

The client broadcast to all server that it has accepted the offer.

Question 5

What does the acknowledge process do in DHCP?

Answer 5

The DHCP server send a final unicast to the client that include the IP information the client will use.

Question 6

What is FDDI?

Answer 6

• Fiber distributed data interference is a standard for transferring data on fiber optic cables.
○ It uses a ring topology
○ Can extend to over 200km uses optical cabling.

Question 7

What is FUll Duplex?

Answer 7

Can transmit and receive data at the same time.

Question 8

What is half duplex?

Answer 8

Can transmit and receive but not at the same time.

Question 9

What is simplex?

Answer 9

One way connection.

Question 10

What is a gateway address?

Answer 10

The way out of a network.

Question 11

What is WINS?

Answer 11

Wins converts netbios names to IP addresses.

Question 12

What is OSPF?

Answer 12

Sends a multicast packet as soon as a chnage in network configuration is detected.

Question 13

What is CSMA/ CA?

Answer 13

Collision avoidance- ethernet wireless

Question 14

What is CSMA/CD?

Answer 14

Collision Detection- wired

Question 15

What is an IP conflict?

Answer 15

IP conflict occur when two computers are configured with the same IP address.
Can occur if two computers are using the same static IP address that falls into the same DHCP range for the local network and the same address is assigned to the computer by DHCP.

Question 16

What is subnetting?

Answer 16

Subnetting is the subdivision of your logical IP network. All computers are on one subnet or network with no division involved.
By mdofifying the subnet mask you can subnet your network into multiple smaller networks.
Subnetting the first and last address cannot be used.
You lose two addresses every time you subnet.

Question 17

What is class D used for?

Answer 17

Class D is used for multicasting- trasnmiting data to multiple computers or routers.

Question 18

What is class E used for?

Answer 18

Class E was reserved for future use but IPv6 is now used instead.

Question 19

What is FQDN?

Answer 19

Fully qualified domain name. 
Split into two parts
Host name 
Domain name
e.g:mymail.somecollege.edu