Networking Study 1

Question 1

To accomplish end to end communications across network boundaries, network layer protocols perform what 4 basic operations?

Answer 1

1) Addressing end devices
2) Encapsulation
3) Routing
4) De-encapsulation

Question 2

What are the 3 basic characteristics of IP (internet protocol)?

Answer 2

1) It is connectionless (no prior connection to the destination set up; no session)
2) Best effort (doesn’t guarantee packet delivery)
3) Media independent (it doesn’t matter if the data travels through copper, light, etc)

Question 3

What is MTU?

Answer 3

Maximum Transmission Unit

Question 4

Which OSI layer sends segments to be encapsulated in an IPv4 or IPv6 packet?

Answer 4

Transport Layer (layer 4)

Question 5

Which layer is responsible for taking an IP packet and preparing it for transmission over the communications medium?

Answer 5

Data Link layer (layer 2)

Question 6

What are the 7 OSI model layers?

Answer 6

Application
Presentation
Session
Transport
Network
Data link
Physical

Question 7

What is the term for splitting up an IP packet when forwarding it from one medium to another medium with a smaller MTU?

Answer 7

Fragmentation

Question 8

What is ICMP?

Answer 8

Internet Control Message Protocol

Question 9

What is OSPF?

Answer 9

Open Shortest Path First