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Net Plus > Ports and Protocols > Flashcards

Ports and Protocols Flashcards

1
Q

What is ARP?

A

Address Resolution Protocol

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2
Q

What is TCP

A

Transmission Control Protocol

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3
Q

What is UDP

A

User Datagram Protocol

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4
Q

What is BOOTP and what ports does it use?

A

Boostrap Protocol

udp/67 & 68
Automate the IP address configuration process

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5
Q

What is DHCP and what ports does it use?

A

Dynamic Host Configuration Protocol

udp/67 & 68
Replaced BOOTP

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6
Q

What is DNS and what port does it use?

A

Domain Name Services

udp & tcp/53
Convert domain names to IP addresses

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7
Q

What is NTP and what port does it use?

A

Network Time Protocol

udp/123
Automatically synchronize clocks

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8
Q

What is ICMP?

A

Internet Control Message Protocol

Send management messages between devices

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9
Q

What is IGMP?

A

Internet Group Management Protocol

Manage membership of multicast groups

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10
Q

What is SNMP and what port does it use?

A

Simple Network Management Protocol

udp/161
Gather statistics and manage network devices

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11
Q

What is Telnet and what port does it use?

A

Telecommunications Network

tcp/23

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12
Q

What is SSH and what port does it use?

A

Secure Shell

tcp/22
Encrypted console login

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13
Q

What is RDP and what port does it use?

A

Remote Desktop Protocol

tcp/3389
Graphical display of remote device

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14
Q

What is FTP and what port does it use?

A

File Transfer Protocol

tcp/20 & 21
Sends and receives files between systems

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15
Q

What is TFTP and what port does it use?

A

Trivial File Transfer Protocol

udp/69
A very simple file transfer application

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16
Q

What is SMTP and what port does it use?

A

Simple Mail Transfer Protocol

tcp/25
transfer email between mail servers

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17
Q

What is POP3 and what port does it use?

A

Post Office Protocol version 3

tcp/110
Receive mail into a mail client but does not store it on the server once it is delivered.

18
Q

What is IMAP4 and what port does it use?

A

Internet Message Access Protocol v4

tcp/143
Keeps the mail on the server AND delivers it.

19
Q

What is HTTP and what port does it use?

A

Hypertext Transfer Protocol

tcp/80
Web server communication

20
Q

What is HTTPS and what port does it use?

A

Hypertext Transfer Protocol Secure

tcp/443
Web server communication with encryption

21
Q

What is TLS/SSL and what port does it use?

A

Transport Layer Security and Secure Socket Layer

tcp/443
Secure protocols for web browsing

22
Q

What is SIP and what ports does it use?

A

Session Initiation Protocol

tcp/5060-5061
VoIP signaling protocol

23
Q

What is RTP?

A

Real-time Transport Protocol

dynamic port
VoIP media stream

24
Q

EUI-48

A

Traditional Ethernet MAC Address (6 bytes)

00:21:70:6f:06:f2

25
Q

EU-64

A

IPv6 link-local auto configuration (8 bytes)

00:21:70:6f:06:f2:08:4f

26
Q

APIPA

A

Automatic Private IP Addressing

169.254.1.0-169.254.254.255

27
Q

STP

A

Spanning Tree Protocol

  • Prevent loops on a switched network
  • Switches commo using BPDU (Bridge Protocol Data
    Units)
  • When a network topology change occurs, STP automatically adjusts to the change
28
Q

Link State Routing Protocol

A

Routes are based on availability, speed and other criteria
Very scalable, used by large networks

OSPF, IS-IS

29
Q

Distance-Vector Routing Protocol

A

Determines routes based on number of hops
the deciding vector is distance

RIP, RIPv2, BGP

30
Q

Hybrid Routing Protocol

A

A bit of link state and a bit of distance vector

EIGRP

31
Q

BGP/IGP/EGP

A

Border Gateway Protocol

IGP = Interior Gateway Protocol
EGP = Exterior Gateway Protocol
32
Q

Common Routing Metrics

A

Hop Count, Load, Packet Loss
Load, MTU, Latency
Throughput, Network Speed, Path Reliability
Link Utilization

33
Q

DNS Resolution Process

A

1- Request sent to local name server
2- Name server qureies root server
3- Root response sent to local name server
4- Name server queries .com name server
5- .com response sent to local name server
6- Name server queries specific domain server
7- Domain server responds to name server
8- Name server provides result to local device
9- Answer is cached locally

34
Q

Types of DNS records

A 
A and AAAA - Address
MX - Mail Exchanger
PTR - Pointer
CNAME - Canonical Name
NS - Name Server
35
Q

SSL VPN

A

Uses common SSL protocol

Can be run from a browser or lightweight client

36
Q

PPTP

A

Point to Point Tunneling Protocol

Just a tunnel (does not encrypt)
Authenticates with MS-CHAPv2

37
Q

EAP

A

Extensible Authentication Protocol

38
Q

L2TP

A

Layer 2 Tunneling Protocol

Another tunnel (no encryption)
Add an encryption protocol for privacy
Comonly used for endpoint connectivity
39
Q

CARP

A

Common Address Redundancy Protocol

40
Q

What is NNTP and what port does it use?

A

Network News Transfer Protocol

tcp/udp 119

41
Q

What is TACACS and what port does it use?

A

tcp 49

Net Plus (7 decks)

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