Protocols

Question 1

PPTP

Answer 1

Point-to-Point Tunneling Protocol

Manages tunneling on VPN

Question 2

ARP

Answer 2

Address Resolution Protocol

Resolves IP addresses to MAC addresses

Layer 3

Question 3

TCP

Answer 3

Transmission Control Protocol

Manages connection-oriented data transmission

Layer 4

Question 4

TFTP

Answer 4

Trivial FTP

Lightweight FTP for small files

Layer 7

Question 5

RIP

Answer 5

Routing Information Protocol

Used by routers to communicate network information

Layer 3

Question 6

IMAP

Answer 6

Internet Message Access Protocol

Used to receive email messages

Layer 7

Question 7

ICMP

Answer 7

Internet Control Message Protocol

Used for error messages and diagnostic reporting

Layer 3

Question 8

L2TP

Answer 8

Layer 2 Tunneling Protocol

Manages tunneling in VPN

Can use IPSec to encrypt traffic

Question 9

RARP

Answer 9

Reverse Address Resolution Protocol

Resolves MAC addresses to IP addresses

Layer 3

Question 10

MAC

Answer 10

Media Access Control

802.3

Defines how packets are placed on the physical media

Layer 1

Question 11

DNS

Answer 11

Domain Name System

Resolves host names to IP addresses

Layer 7

Question 12

SMTP

Answer 12

Simple Mail Transfer Protocol

Used to send email from an email server

Layer 7

Question 13

ATM

Answer 13

Asynchronous Transfer Mode

Used in WANs to transfer data in fixed-size cells

Layer 2

Question 14

IPSec

Answer 14

Internet Protocol Security

Used to secure IP traffic via encryption

Layer 3

Question 15

Frame Relay

Answer 15

Uses variable-sized frames to transfer data over permanent virtual circuits

Layer 2

Question 16

LLC

Answer 16

Logical Link Control

802.2

Provides flow control and error control and allows multiple protocols to work together

Layer 2

Question 17

SNMP

Answer 17

Simple Network Management Protocol

Used to manage network devices

Layer 7

Question 18

SMB

Answer 18

Server Message Block

Used on Microsoft networks for file and printer sharing

Layer 7

Question 19

LDAP

Answer 19

Lightweight Directory Access Protocol

Used to query a directory service (AD DS)

Layer 7

Question 20

IGMP

Answer 20

Internet Group Multicast Protocol

Used for multicasting traffic

Layer 3

Question 21

DHCP

Answer 21

Dynamic Host Configuration Protocol

Assigns TCP/IP configuration information to clients

Layer 7

Question 22

FTP

Answer 22

File Transfer Protocol

Transfer files to and from an FTP server

Layer 7

Question 23

UDP

Answer 23

User Datagram Protocol

Manages connection-less data transmission

Layer 4

Question 24

HTTP

Answer 24

Hypertext Transfer Protocol

Transmits data across the internet for web pages

Layer 7

Question 25

IPv4

Answer 25

Internet Protocol v4

32-bit addressing protocol

Layer 3

Question 26

POP3

Answer 26

Post Office Protocol

Used to retrieve email from POP3 email servers

Layer 7

Question 27

IPv6

Answer 27

Internet Protocol v6

128-bit

Layer 3

Question 28

Token Ring

Answer 28

The talking stick

Layer 2

Question 29

OSPF

Answer 29

Open Shortest Path First

Used by routers to communicate network information

Layer 3

Question 30

LACP

Answer 30

Link Aggregation Control Protocol

802.3ax

Forms single logical channel between devices with multiple physical links

Port speeds become additive

Question 31

NetBIOS

Answer 31

Network Basic Input/Output Protocol