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Network+ > Well Known Ports > Flashcards

Well Known Ports Flashcards

1
Q

DHCP

A

upd/67, upd/68

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2
Q

DNS

A

upd/53

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3
Q

HTTP

A

tcp/80

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4
Q

HTTPS

A

tcp/443

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5
Q

LDAP

A

tcp/389

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6
Q

LDAPS

A

tcp/389

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7
Q

NTP

A

upd/123

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8
Q

Telnet

A

tcp/23

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9
Q

SSH

A

tcp/22

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10
Q

SMTP

A

tcp/25

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11
Q

SFTP

A

tcp/22

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12
Q

FTP

A

tcp/22

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13
Q

TFTP

A

udp/69

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14
Q

RDP

A

tcp/3389

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15
Q

SIP

A

tcp/5060

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16
Q

SMB

A

tcp/445

17
Q

POP3

A

tcp/110

18
Q

IMAP4

A

tcp/143

19
Q

VoIP

A

tcp/1720 H.323

20
Q

CSMA/CD

A

Carrier Sensing Multiple Access (Collision Detection)

Addresses issues of 2 devices talking at the same time

21
Q

Trunk

A

adding 802.1Q tag to the frame when sending in to the same VLCA, but on a different switch

22
Q

ARP

A

Address Resolution Protocol
how a device learns the layer 2 address of a device on the same network.
ARP request is a layer 2 broadcast

23
Q

Broadcast

A

sends to all devices on network. Is a 48-bit, looks like (ff:ff:ff:ff:ff:ff)

24
Q

Switch Port Mirroring

A

Take packet/frames from one area/port on switch, then forward it to another port, where you can take a closer look at them.
(In CISCO it’s SPAN-Switch Port Mirroring)

25
Q

Dynamic Routing Protocol

A

Routers talk to each other, sharing the IP addresses they are connected to.
(Distance Vector, Link State, Hybrid)

26
Q

Distance Vector

A

Set of routing protocols that calculates the total cost to get to a particular network ID and compares that cost to the total cost of all the other routes to get to the same network ID. Can use RIP2. Routing by rumor

27
Q

RIP2

A

Routing Information Protocol- used in distance vector DRP. Max hop count is 15

28
Q

Link State

A

type of DRP that announces only changes to routing tables, as opposed to entire routing tables. Type OSFP

Network+ (3 decks)

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