Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

7 Cards in this Set

  • Front
  • Back
Layer 1: Physical Layer
Layer 1
Defines physical means of sending data over network devices
Interface between network medium and devices
Define optical, electrical, and mechanical characteristics.
Specification of voltage, wire speed, and cable pinouts
Ex: Ethernet, 802.3, 802.5
Layer 2: Data Link Layer
Layer 2
Provides framing and sequencing
Detects and corrects received frame errors
Combinations of bits into bytes and bytes into frames
Access to media using MAC address
Ex: HDLC, Frame relay, PPP
Layer 3: Network Layer
Layer 3
Determines how data is transferred among network devices
Route packets according to the unique network addresses
Provides flow and congestion control to prevent network resource depletion.
Layer 4: Transport Layer
Layer 4
Manages end to end message delivery in network
Provides reliable and sequential packet delivery through error recovery and flow control mechanisms
Provides connectionless oriented packet delivery
Layer 5: Session Layer
Layer 5
Manages user sessions and dialogues
Controls establishment and termination of logical links between users
Reports upper layer errors
Ex: RPC, SQL, NetBios
Layer 6: Presentation Layer
Layer 6
Masks the differences of data formats between dissimilar systems
Specifies architecture-independent data transfer format
Encodes and decodes data; Encrypts and decrypts data; compress and decompress data.
Layer 7: Application Layer
Layer 7
Interface between network and application software.
Provides standardized services such as virtual terminal, file and job transfer, and operation.
Ex: Telnet, HTTP, FTP, WWW browsers, SMTP gateway, SNMP