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CompTIA Network+ N10-008 - Jason Dion Notes > OSI Model > Flashcards

OSI Model Flashcards

1
Q

What is Data called at Layers 7 (Application) , 6 (Presentation), and 5 (Session)?

A

Data

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2
Q

What is Data called at Layer 4 (Transport)?

A

Segment (TCP), Datagram (UDP)

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3
Q

What is Data called at Layer 3 (Network)?

A

Packet

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4
Q

What is Data called at Layer 2 (Data-Link)?

A

Frame

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5
Q

What is Data called at Layer 1 (Physical)?

A

Bits

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6
Q

What devices / protocols are found at Layer 1?

A

Cables, wireless, hubs, access points, media converters

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7
Q

What devices / protocols operate at Layer 2?

A

Switches, bridges, MAC addresses

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8
Q

What devices / protocols operate at Layer 3?

A

Routers, multilayer switches, IPV4, IPV6, ICMP

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9
Q

What devices / protocols operate at Layer 4?

A

TCP / UDP, WAN accelerators, load balancers, firewalls

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10
Q

What devices / protocols operate at Layer 5?

A

H323.3, NETBIOS

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11
Q

What devices / protocols operate at Layer 7?

A

DNS, FTP

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12
Q

Three-way handshake to establish session

A

SYN-SYN / ACK-ACK

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13
Q

Three-way handshake to teardown session

A

FIN-FIN / ACK-ACK

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14
Q

What is Multiprotocol Label Switching (MPLS)?

A

Data forwarding technology that increases the speed and controls the flow of network traffic

Data is directed through a path via labels instead of requiring complex lookups in a routing table at every stop

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15
Q

What is Multipoint Generic Routing Encapsulation (mGRE)?

A

A tunneling protocol used to encapsulate and route data via a virtual point-to-multipoint connection

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16
Q

What is a Demarcation Point?

A

Where the outside internet/phone service connects to inside wiring

17
Q

What is a Smart Jack?

A

Placed between demarcation point and customer wiring

Used for remote diagnostics

18
Q

What is a Satellite provider link?

A

One satellite covers a large area

Used where other connection types not available

19
Q

What is the maximum speed of Satellite?

A

Hundreds of gigabits

20
Q

What is a Digital Subscriber Line (DSL) provider link?

A

Uses existing telephone lines

21
Q

What is the maximum speed of DSL?

A

45 mb/s download
7 mb/s upload

22
Q

What is a Cable provider link?

A

Uses existing cable TV network

Transmit and receive signals carried on two premium TV channels

23
Q

What is the maximum speed of Cable?

A

300 mb/s

24
Q

What is a Leased Line provider link?

A

Dedicated to a single customer

25
Q

What is the maximum speed of Leased Line?

A
26
Q

What is Metro-Optical provider link?

A

Optical fiber connecting to providers MAN

27
Q

What is the maximum speed of Metro-Optical?

A

100 mb/s

CompTIA Network+ N10-008 - Jason Dion Notes (6 decks)

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