Cissp Network & Telecommunications Security

Front 1

OSI Model

Back 1

People dont need to see Paula Abdule

Please do not throw sausage pizza away

Front 2

Layer 7

Back 2

Application

FTP/DNS/SMTP - browsers

Front 3

Layer 6

Back 3

Presentation

Common format - compresses, encrypted
MPEG, GIF, JPEG

Front 4

Layer 5

Back 4

Session

Logical communication connection between 2 hosts
Full Duplex (2 way simultaneously)
Half (2 way one at time)
Simples (one way)

Front 5

Layer 4

Back 5

Transport

tcp/ User Data gram

Client and server devices support

Front 6

Layer 3

Back 6

Network

Routing, packets

IP addresses

Front 7

Layer 2

Back 7

Data Link

Bridge and switches

Bits are organized into frames *MAC

Front 8

Layer 1

Back 8

Physical

Wire, fiber,or wirless

Front 9

TCP/IP Model

Back 9

Collection of communication protocols used to over data exchange on the Internet

Front 10

TCP/IP Model Layers

Back 10

1. Process - Session, presentation,& app layers of OSI
2. Host to host - similar to transport
3. Networking - creates logical networks - IP
4. Network Access - physical and data layers

Front 11

TCP/IP Protocals

ARP

Back 11

Address resolution - resolves IP and MAC addresses

Front 12

TCP/IP Protocals

IP

Back 12

Used to move info between nodes

Front 13

TCP/IP Protocals

TCP

Back 13

Connection-oriented protocol

*error detection, retransmission of lost segments

Front 14

TCP/IP Protocals

UDP

Back 14

Connectionless uses port #s and error detection

*Internet radio, video - parts may drop

Front 15

TCP/IP Protocals

DHCP *

Back 15

Dynamic host configuration protocol

1.clients request access
2. the DHCP server manages a group of addresses for each network
3. Addresses are assigned on a first come first served basis
4. Addresses are provided for a given period of time using a lease processes

Front 16

TCP/IP Protocals

DNS

Back 16

Domain Name Service - resolve device names into IP addresses

Front 17

TCP/IP Protocals

IGMP

Back 17

Internet Group Mang. used with IP multicasting to indicate when a device is joining a mutlicast-enabled app.

Front 18

Router

Back 18

layer 3

Front 19

Switch

Back 19

layer 2

Front 20

Gateway

Back 20

all layers - best answer is layer 7

Front 21

Appliance

Back 21

specialized networking device that supports many different networking functions. - single task

Front 22

Data network types

Back 22

LAN - house, floor
CAN - campus
MAN - metro - city
WAN - Wide
Switched network - froward traffic between segment using a single type of network protocol (layer 2)
Routed network - connect a LAN to a CAN (layer 3)

Front 23

Data Network Topology

Back 23

Star - one central point
Bus - line
Ring - circle
Mesh - all to all

Front 24

Network Transition Methodologies

Back 24

Ethernet
Cable modem
DSL
ATM - high speed fiber-based
SONET - faster offered by phone companies
VPN

Front 25

Data Services

Back 25

RPC - execute a model, subroutine, or procedure
DS - directory services
Data access services - mediates the access of data

Front 26

Data Services Cont.

Back 26

Messaging (asynchronous - email/synchronous - IM)
Data exchange - HTTP
Peer to peer - Napster
Administrative services - SSH - replaces telnet - secure encrypted environment

Front 27

Data Services Cont.

Back 27

RAS - remote access to a computer
Info services - Network time (clocks all same)
VOIP