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CCNA > 1 - Interfaces and Cables > Flashcards

1 - Interfaces and Cables Flashcards

1
Q

1000BASE-LX maximum cable length (2 answers)

A

550 meters (multimode)
5 km (single mode)

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2
Q

1000BASE-LX was defined in the IEEE <?> standard

A

802.3z

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3
Q

10GBASE-ER maximum cable length

A

30 km

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4
Q

10GBASE-LR maximum cable length

A

10 km

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5
Q

10GBASE-SR maximum cable length

A

400 meters

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6
Q

10GBASE-SR, 10GBASE-LR and 10GBASE-ER were defined in the IEEE <?> standard

A

802.3ae

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7
Q

<?> cables are vulnerable to EMI

A

UTP

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8
Q

<?> cables emit a faint signal outside the cable which can be detected and copies

A

UTP

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9
Q

<?> fiber cables allow multiple angles (modes) of light waves to enter the fiberglass core

A

Multimode

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10
Q

<?> connection allows both devices to send and receive data at the same time

A

Full-duplex

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11
Q

Ethernet was originally defined in the IEEE <?> standard in 1983

A

802.3

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12
Q

Fiber-Optic cables are connected to <?> transceivers in a router or switch.

A

SFP (Small Form-Factor Pluggable)

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13
Q

How many bits are in 1 byte?

A

8

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14
Q

How many bits are in 1 gigabit?

A

1,000,000,000 (1 billion)

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15
Q

How many bits are in 1 kilobit?

A

1000

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16
Q

How many bits are in 1 megabit?

A

1,000,000

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17
Q

How many bits are in 1 terabit?

A

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

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18
Q

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

A

4 (=8 wires total)

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19
Q

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

A

2 (=4 wires total)

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20
Q

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

A

2 (=4 wires total)

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21
Q

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

A

4 (=8 wires total)

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22
Q

How many pins are in an RJ45 connector?

A

8

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23
Q

IEEE standard <?> = 1 Gbps Ethernet (1000BASE-T)

A

802.3ab

24
Q

IEEE standard <?> = 10 Gbps Ethernet (10GBASE-T)

A

802.3an

25
Q

IEEE standard <?> = 10 Mbps Ethernet (10BASE-T)

A

802.3i

26
Q

IEEE standard <?> = 100 Mbps Ethernet (100BASE-T)

A

802.3u

27
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

28
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

29
Q

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

A

crossover cable

30
Q

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

A

crossover cable

31
Q

In <?> fiber cables, light travels straight through the fiberglass core at a single angle.

A

single-mode

32
Q

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

A

3 and 6

33
Q

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

A

1and 2

34
Q

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

A

3 and 6

35
Q

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

A

1 and 2

36
Q

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

A

3 and 6

37
Q

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

A

1 and 2

38
Q

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

A

1 and 2

39
Q

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

A

3 and 6

40
Q

Multimode Fiber cables have a <?> fiberglass core than single-mode fiber cables.

A

wider

41
Q

Network speeds are measured in <?> per second.

A

bits

42
Q

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

A

Single-mode and multimode

43
Q

What does UTP stand for?

A

Unshielded Twisted Pair

44
Q

What is the maximum length of an Ethernet UTP cable?

A

100 meters

45
Q

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

A

RJ45

46
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

47
Q

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

A

10 Gbps

48
Q

What is the speed of a ‘FastEthernet’ connection?

A

100 Mbps

49
Q

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

A

1 Gbps

50
Q

What is the speed of an ‘Ethernet’ connection?

A

10 Mbps

51
Q

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

A

crossover cable

52
Q

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

A

straight-through cable

53
Q

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

A

single-mode

54
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

55
Q

Which is cheaper, single-mode or multimode fiber?

A

multimode

56
Q

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

A

Pair 1-2, Pair3-6

57
Q

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

A

It protects against EMI (Electromagnetic Interference)

CCNA (24 decks)

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