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Interfaces and Cables Flashcards

1
Q

What is the name of the connector on the end of an Ethernet UTP cable?

A

RJ45

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2
Q

How many pins are in an RJ45 connector?

A

8

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3
Q

How many bits are in 1 byte?

A

8

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4
Q

Network speeds are measured in […] per second.

A

bits

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5
Q

How many bits are in 1 kilobit?

A

1,000 (one thousand)

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6
Q

How many bits are in 1 megabit?

A

1,000,000 (one million)

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7
Q

How many bits are in 1 gigabit?

A

1,000,000,000 (one billion)

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8
Q

How many bits are in 1 terabit?

A

1,000,000,000,000 (one trillion)

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9
Q

Ethernet was originally defined in the IEEE […] standards in 1983.

A

802.3

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10
Q

What is the maximum length of an Ethernet UTP cable?

A

100 meters

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11
Q

What is the speed of an ‘Ethernet’ connection?

A

10 Mbps

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12
Q

What is the speed of a ‘FastEthernet’ connection?

A

100 Mbps

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13
Q

What is the speed of a ‘Gigabit Ethernet’ connection?

A

1 Gbps

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14
Q

What is the speed of a ‘10 Gig Ethernet’ connection?

A

10 Gbps

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15
Q

IEEE standard […] = 10 Mbps Ethernet (10BASE-T)

A

802.3i

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16
Q

IEEE standard […] = 100 Mbps Ethernet (100BASE-T)

A

802.3u

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17
Q

IEEE standard […] = 1 Gbps Ethernet (1000BASE-T)

A

802.3ab

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18
Q

IEEE standard […] = 10 Gbps Ethernet (10GBASE-T)

A

802.3an

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19
Q

What does UTP stand for?

A

Unshielded Twisted Pair

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20
Q

Why are the wire pairs in a UTP cable twisted together?

A

It protects against EMI (Electromagnetic Interference)

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21
Q

How many pairs of wires are used in a 10BASE-T cable?

A

2 (=4 wires)

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22
Q

How many pairs of wires are used in a 100BASE-T cable?

A

2 (=4 wires)

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23
Q

How many pairs of wires are used in a 1000BASE-T cable?

A

4 (=8 wires)

24
Q

How many pairs of wires are used in a 10GBASE-T cable?

A

4 (=8 wires)

25
Q

A […] connection allows both devices to send and receive data at the same time.

A

full-duplex

26
Q

In a FastEthernet connection, a router transmits data on which pins?

27
Q

In a FastEthernet connection, a router receives data on which pins?

28
Q

In a FastEthernet connection, a firewall transmits data on which pins?

29
Q

In a FastEthernet connection, a firewall receives data on which pins?

30
Q

In a FastEthernet connection, a PC transmits data on which pins?

31
Q

In a FastEthernet connection, a PC receives data on which pins?

32
Q

In a FastEthernet connection, a switch transmits data on which pins?

33
Q

In a FastEthernet connection, a switch receives data on which pins?

34
Q

If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a router and a switch?

A

straight-through cable

35
Q

If Auto MDI-X is disabled, what kind of UTP cable should be used to connect a PC and a switch?

A

straight-through cable

36
Q

If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two routers together?

A

crossover cable

37
Q

If Auto MDI-X is disabled, what kind of UTP cable should be used to connect two switches together?

A

crossover cable

38
Q

What kind of cable connects a pin pair on one end of a UTP cable to the same pair?

A

straight-through cable

39
Q

What kind of cable connects a pin pair on one end of a UTP cable to the opposite pair?

A

crossover cable

40
Q

What is the name of the feature that allows a device to automatically adjust which RJ45 pin pairs it uses to transmit and receive data?

A

Auto MDI-X

41
Q

Which two pin pairs are used in a 10BASE-T or 100BASE-T connection?

A

Pair 1-2, Pair 3-6

42
Q

Which four pin pairs are used in a 1000BASE-T or 10GBASE-T connection?

A

Pair 1-2, Pair 3-6, Pair 4-5, pair 7-8

43
Q

Fiber-Optic cables are connected to […] transceivers in a router or switch.

A

SFP (Small Form-Factor Pluggable)

44
Q

What are the two main kinds of fiber-optic cable?

A

Single-mode and multimode

45
Q

Multimode Fiber cables have a […] fiberglass core than single-mode fiber cable

46
Q

[…] fiber cables allow multiple angles (modes) of light waves to enter the fiber.

47
Q

Which allows longer cables, single-mode or multimode fiber?

A

single-mode

48
Q

Which is cheaper, single-mode or multimode fiber?

49
Q

In […] fiber cables, light travels straight through the fiberglass core at a single angle.

A

single-mode

50
Q

10GBASE-SR, 10GBASE-LR, and 10GBASE-ER were defined in the IEEE […] standard.

51
Q

1000BASE-LX was defined in the IEEE […] standard.

52
Q

1000BASE-LX maximum cable length:

A

550 meters (multimode) 5 kilometers (single-mode)

53
Q

10GBASE-SR maximum cable length:

A

400 meters

54
Q

10GBASE-LR maximum cable length:

A

10 kilometers

55
Q

1000BASE-ER maximum cable length:

A

30 kilometers

56
Q

[…] cables emit a faint signal outside of the cable, which can be detected and

57
Q

[…] cables are vulnerable to EMI (electromagnetic interference)

CCNA (63 decks)

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