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A+ > Ethernet > Flashcards

Ethernet Flashcards

1
Q

How big is an Ethernet Frame?

A

1500 Bytes

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2
Q

Every system on a LAN is identified by what?

A

A Media Access Control address. (MAC address)

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3
Q

Every MAC address is how many bits?

A

48 bits, represented by 12 hex characters.

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4
Q

The ethernet standard limits a LAN to how many devices?

A

1024

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5
Q

Max length of UTP cables?

A

100 meters

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6
Q

An RJ-11 has how many contacts?

A

4

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7
Q

An RJ-45 has how many contacts?

A

8

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8
Q

CAT5 speed

A

100 Mbps

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9
Q

CAT5e speed

A

1Gbps

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10
Q

CAT6 speed

A

1 Gbps up to 100 meters, 10 Gbps up to 55 meters

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11
Q

CAT6a speed

A

10 Gbps up to 100 meters

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12
Q

What are the three plenum ratings?

A

PVC, Riser and Plenum

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13
Q

T568A crimping standard goes like this:

A

green-white, green, orange-white, blue, blue-white, orange, brown-white, brown.

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14
Q

T568B crimping standard goes like this:

A

Orange-white, orange, green-white, blue, blue-white, green, brown-white, brown

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15
Q

Class A private IP addresses are in what range?

A

10.x.x.x

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16
Q

Class B private IP addresses are in what range?

A

172.16.x.x to 172.31.x.x

17
Q

Class C private ip addresses are in what range?

A

192.168.x.x

18
Q

What is the loopback address?

A

127.0.0.1

19
Q

What command allows you to ping indefinitely in Windows?

A

ping -t

20
Q

What is the range of APIPA IP addresses?

A

169.254.x.x

21
Q

IPv6 addresses are how many bits?

A

128 bits

22
Q

FTP is what port?

A

Port 21

23
Q

SSH is what port?

A

Port 22

24
Q

Telnet is what port?

A

port 23

25
Q

SMTP is what port?

A

port 25

26
Q

DNS is what port?

A

port 53

27
Q

HTTP is what port?

A

port 80

28
Q

POP3 is what port?

A

port 110

29
Q

SNMP is what port?

A

port 161/162

30
Q

IMAP is what port?

A

port 143

31
Q

RDP is what port?

A

3389

32
Q

NETBIOS/NETBT is what port?

A

Ports in range 137-139

33
Q

SMB/CIFS is what port?

A

Port 445

34
Q

SLP is what port?

A

427

35
Q

AFP is what port?

A

Port 548

36
Q

DHCP is what port?

A

67/68

37
Q

LDAP is what port?

A

389

38
Q

A FQDN can have up to how many characters?

A

255, including dots.

A+ (4 decks)

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