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CISSP Study Group > OSI Model > Flashcards

OSI Model Flashcards

Domain 4

1
Q

What is the OSI Model (Open Systems Interconnection)

A

A model created in the 1980s by the International Organization for Standardization (ISO) as a part of its mission to create a protocol set to be used as a standard for all vendors

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2
Q

What are the 7 layers of OSI model

A

Application
Presentation
Session
Transport
Network
Data Link
Physical

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3
Q

What are the Functions of the Physical Level

A

Electrical signal
Bits to voltage

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4
Q

What are the hardware/Formats at the Physical layer

A

Cables, HUB, USB, DSL, Repeaters, ATM

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5
Q

What is the data at the physical layer

A

Bits

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6
Q

What is the data at the data link layer

A

Frames

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7
Q

What are the functions of the data link layer

A

Frames setup
Error detection and control
Check integrity of packets
Destination address
Frames use in MAC to IP address conversion

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8
Q

What security is offered at the physical layer

A

Confidentiality

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9
Q

What security is offered at the data link layer

A

Confidentiality

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10
Q

What are some of the protocols offered at the data link layer

A

PPP
PPTP
L2TP
ARP
RARP
CHAP
MLP
HDLC
Ethernet
Token
Ring
FDDI

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11
Q

What are the hardware/formats at the data link layer

A

Layer2 Switch
Bridges

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12
Q

What is the data at the network layer

A

Packets

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13
Q

What security is offered at the network layer

A

Confidentiality
Authentication
Integrity

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14
Q

What are the functions of the network layer

A

Routing
Layer 3 switching
Segmentation
Logical Addressing
ATM
Packets

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15
Q

What are some of the protocols offered at the network layer

A

ICMP
BGP
OSPF
RIP
IP
BOOTP
DHCP
ICMP

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16
Q

What are the hardware/formats at the network layer

A

Layer 3 switch
router

17
Q

What is the data at the transport layer

A

Segment

18
Q

What security is offered at the transport layer

A

Confidentiality
Authentication
Integrity

19
Q

What are the functions of the transport layer

A

Segment
Connection oriented

20
Q

What are some of the protocols offered at the transport layer

A

TCP
UDP datagrams
Reliable end to end data transfer
Segmentation -sequencing and error checking

21
Q

What are the hardware/formats at the transport layer

A

Routers
VPN concentrators
Gateway

22
Q

What is the data at the session layer

A

Data

23
Q

What security is offered at the session layer

A

Non Repudiation

24
Q

What are the functions of the session layer

A

Data
Simplex
Half Duplex
Full Duplex
Peer Connctions

25
Q

What are some of the protocols offered at the session layer

A

TCP
UDP
NSF
SQL
RADIUS
RPC
PPTP
PPP

26
Q

What are the hardware/formats at the session layer

A

Gateways

27
Q

What is the data at the presentation layer

A

Data

28
Q

What security is offered at the transport layer

A

Confidentiality
Authentication
Encryption

29
Q

What are the functions of the presentation layer

A

Data compression/decompression
Encryption/Decryption

30
Q

What are some of the protocols offered at the presentation layer

A

TCP
UDP messages

31
Q

What are the hardware/formats at the presentation layer

A

Gateways
JPEG
TIFF
MID
HTML

32
Q

What is the data at the application layer

A

Data

33
Q

What security is offered at the application layer

A

Confidentiality
Authentication
Integrity
Non Repudiation

34
Q

What are the functions of the application layer

A

Data

35
Q

What are some of the protocols offered at the application layer

A

TCP
UDP
FTP
TELNET
TFTP
SMTP
HTTP
CDP
SSL

36
Q

What are the hardware/formats at the application layer

A

Gateways

CISSP Study Group (3 decks)

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