Internetworking W1-W2

Question 1

DHCP

Answer 1

Dynamic Host Configuration Protocol

Question 2

DNS

Answer 2

Domain Name System
A globally distributed, scalable, reliable database

Question 3

Domain name: Maximum depth and maximum characters

Answer 3

127 Levels
255 Characters

Question 4

What is a subdomain? Give Example

Answer 4

sales.nominum.com is a subdomain of nomnum.com & com

Question 5

Authorative type of name server. Explain

Answer 5

Authorative - maintains the data.
Primary - where the data is edited
Secondary - where data is replicated to

Question 6

Non-authorative type of name server. Explain

Answer 6

(Caching) – stores data obtained from an authoritative server

Question 7

Name resolution explain the process

Answer 7

Is the process by which local resolvers and name servers cooperate to find data in the name space. (e.g. nslookup)

Question 8

Lease

Answer 8

Length of time a DHCP client can use a specific IP address

Question 9

Cache

Answer 9

is hardware or software that is used to store something, usually data, temporarily in a computing environment.

Question 10

IP pool

Answer 10

a set of available IP addresses that you can pass on to customers and resellers, or utilize for your own websites

Question 11

TCP

Answer 11

TCP stands for Transmission Control Protocol a communications standard that enables application programs and computing devices to exchange messages over a network.

Question 12

Functionalities of Layer 3. Explain

Answer 12

Network Layer
This layer handles the routing of the data by delivering it to the correct destination.

Question 13

What’s the maximum range of bytes in the IP address? ipv4

Answer 13

0-255

Question 14

Class A
Give range and characteristics

Answer 14

1-127
Network prefix: 8 bits
Host ID: 24 bits
Used for large number of hosts.

Question 15

Class B
Give range and characteristics

Answer 15

128-191
Netowrk prefix: 16 bits
Host ID: 16 bits
Used for medium size network.

Question 16

Class C
Give range and characteristics

Answer 16

192-223
Network prefix: 24 bits
Host ID: 8 bits
Used for local area network.

Question 17

Class D (mcast)
Give range and characteristics

Answer 17

224-239
Reserve for multi-tasking.

Question 18

Class E
Give range and characteristics

Answer 18

240-254
Reserved for research and Development Purposes.

Question 19

Connectionless

Answer 19

The communication between two network endpoints without a prior arrangement in which one network endpoint simply sends a message to the other

Question 20

Payload

Answer 20

Meaningful valuable data that we want to send to point.

Question 21

Multicasting

Answer 21

Communication between single sneder and multiple receivers.

Question 22

Unicasting

Answer 22

a single, direct request sent from one host to another

Question 23

Broadcasting

Answer 23

Transmitting a packet that will be received by every device on the network

Question 24

Submasks. Classes A,B,C

Answer 24

A: 255.0.0.0
B: 255.255.0.0
C: 255.255.255.0

Question 25

Datagram

Answer 25

is a basic transfer unit associated with a packet-switched network. Datagrams are typically structured in header and payload sections.