Networking - Protocols

Question 1

ARP (Address Resolution Protocol)

Answer 1

Layer 2
But does not fit in clearly to the OSI model
Resolve IP addresses to MAC addresses

Question 2

Ethernet (protocol)

Answer 2

Layer 2

The hardware of a network that guides the formatting of the packet for transmission

Question 3

ICMP

Answer 3

Layer 3

Used for the ping command

Question 4

RIP (Routing information protocol)

Answer 4

Layer 3 - routing protocol

Distributes routing information within an Autonomous System (AS) - shared routing tables across network

Question 5

OSPF (Open Shortest Path First)

Answer 5

Layer 3 - routing protocol
Routers exchange topology (IP routing info) information with their nearest neighbours
More advanced than RIP, which only uses hop information to determine quickest path

Question 6

BGP (Border Gateway Protocol)

Answer 6

Layer 3
Exterior gateway protocol to to exchange routing info with others on the internet
Might pull routing info from your ISPs and find quickest routes

Question 7

IGMP (internet Group Management Protocol)

Answer 7

Layer 3
Allows multiple devices to share one IP address so they can receive the same data. It is used to set up multi-casting on a network.

Question 8

IP (Internet Protocol)

Answer 8

Layer 3
Most common protocol in TCP/IP suite
Used to route and address packets across networks
It attaches IP information to each packet

Question 9

IPSec

Answer 9

Layer 3

It authenticates and encrypts the packets of data to provide encryption - it is a protocol that is usually used in VPNs

Question 10

IPX (Internetwork Packet Exchange)

Answer 10

Layer 3

Usually used on networks using Novell and MS/NetWare LANS - but not used much anymore

Question 11

NAT (Network address translation)

Answer 11

Layer 3

Translated private IP addresses into unregistered IP addresses to connect to the internet

Question 12

SKIP (Simple Key-Management for Internet Protocol)

Answer 12

Layer 3
Key distribution protocol similar to SSL
Establishes long term key once, with no prior communication

Question 13

TCP (Transmission Control Protocol)

Answer 13

Layer 4
One of the main protocols in TC|P/IP suite (AKA IP suite) - enables computers to communication in a reliable way through the three way handshake

Question 14

USP (User Services Platform)

Answer 14

Layer 4
Allows service providers of manufacturers to manage, monitor, upgrade, and control connected devices. i.e Apple IOS update

Question 15

SPX (Sequenced Packet Exchange)

Answer 15

Layer 4

Similar to IPX - classed as a legacy protocol

Question 16

SSL (Secure Socket Layer)/ TLS (Transport Layer Security)

Answer 16

Layer 4
Encrypts all traffic for privacy, integrity and authentication. most use TLS now
It uses a handshake for authentication and Digital signature.
Can be taped on to HTTP and other protocols that don’t encrypt

Question 17

NFS (Network File System)

Answer 17

Layer 5

Question 18

SQL

Answer 18

Layer 5

Question 19

RPC

Answer 19

Layer 5

Question 20

HTTP

Answer 20

Layer 7

Question 21

FTP

Answer 21

Layer 7

Question 22

LPD

Answer 22

Layer 7

Question 23

SMTP

Answer 23

Layer 7

Question 24

Telnet

Answer 24

Layer 7

Question 25

TFTP

Answer 25

Layer 7

Question 26

EDI

Answer 26

Layer 7

Question 27

POP3

Answer 27

Layer 7

Question 28

IMAP

Answer 28

Layer 7

Question 29

SNMP

Answer 29

Layer 7

Question 30

NNTP

Answer 30

Layer 7

Question 31

S-RPC

Answer 31

Layer 7

Question 32

SET

Answer 32

Layer 7

Question 33

FCoE

Answer 33

Converged Protocol - layer 3

Question 34

MPLS

Answer 34

Converged Protocol -

Question 35

iSCI

Answer 35

Converged Protocol

Question 36

VoIP

Answer 36

converged Protocol

Question 37

SDN

Answer 37

converged Protocol