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Network Fundamentals-ITEC 90 > OSI-The Physical Layer > Flashcards

OSI-The Physical Layer Flashcards

1
Q

is the lowest layer. Used for transmitting data in its basic form.

A

Physical Layer OSI

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2
Q

used in the OSI physical Layer. Examples are connectors and interfaces, cables, and network interface cards.

A

Components

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3
Q

is a component installed in a computer in order to connect it to any available network.

A

Network Interface Card
(NIC)

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4
Q

Types of Cable(3)

A
  • Shielded Twisted Pair
  • Unshielded Twisted Pair
  • Coaxial Cable
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5
Q

placing foil shielding around pairs of twisted wires to prevent electro magnetic interference.

A

Shielded Twisted Pair

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6
Q

made the same way as a shielded cable, but without exta foil shielding around the wires.

A

Unshielded Twisted Pair

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7
Q

covered by alternative conducting and insulating shields.

A

Coaxial Cable

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8
Q

used in local area networks to connect a computer to a network hub such as a router.

A

Straight Through Cable

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9
Q

used to connect computing devices together directly.

A

Crossover Cable

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10
Q

a device that terminates a segment of cabling or provides a point of entry for computers, hubs, and routers.

A

Network Connector

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11
Q

designed to eliminate the guesswork in connecting peripherals to a PC.
Replaces serial and parallel ports.
Supports Plug-and-Play installation and hot plugging.

A

Universal Serial Bus (USB)

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12
Q

standard telephone cable connectors. Has 4 wires

A

RJ-11
Registered Jack-11

Has a RJ-12 version. Has 6 wires instead of 4.

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13
Q

is an eight-wire connector that is commonly used to connect computers to a local area network.

A

RJ-45
Registered Jack-45

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14
Q

is a type of RF connector commonly used for cable and universally for satellite television.

A

F-type connector

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15
Q

two fiber cables: one for transmitting data, and one for receiving. Each end is fitted with a plug that can be inserted into a network adapter, hub, or switch.

A

Straight Tip
(ST)
and
Standard/ Subscriber
Connector
(SC)

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16
Q

used for single-mode and multimode fiber-optic cables. Offer extremely precise positioning of the fiber-optic cable.

A

Fiber LC
(Local Connector)

17
Q

are constructed with a plastic housing and provide for accurate alignment via their metal guide pins and plastic ferrules.

A

MT RJ
(Mechanical Transfer)

18
Q

hardware devices that are used to connect computers and other electronic devices to a network

A

Network Devices

19
Q

enables a computer to send or receive data over telephone or cable lines.

A

Modem

20
Q

Types of Modem(3)

A
  • Simplex
  • Half Duplex
  • Full Duplex
21
Q

can transfer data in only one direction.

A

Simplex

22
Q

has the capacity to transfer data in both the directions but only one at a time.

A

Half duplex

23
Q

can transmit data in both the directions simultaneously.

A

Full duplex

24
Q

is used to achieve wireless connection to any network.

A

Wi-Fi technology

25
Q

is a card used to connect any device to the local network wirelessly.

A

Wi-Fi card

26
Q

The physical area of the network which provides internet access through Wi-Fi.

A

Wi-Fi hotspot

27
Q

connects other devices to Ethernet networks through twisted pair cables.
It uses packet switching.

A

Switch

28
Q

commonly used to connect segments of a LAN.
Contains multiple ports.
Acts as a common connection point for devices in a network.

A

Hub

29
Q

connected to at least two networks.
Determines the best path to forward the packets.
Forwards data packets along with networks.

A

Router

30
Q

To summarize Hub, Switch and Router…
(Optional question)

A

Hub- connect a network or personal computers together using a central hub.
Switch- manage ports, manage VLAN security settings.
Router- direct data in a network.

31
Q

ISP means…?

A

Internet Service Provider

Network Fundamentals-ITEC 90 (6 decks)

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