Network+ Certification Section 2 - OSI Model
Terms
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- What's layer 1 in the OSI Model?
- Physical
- What is OSI Layer 2
- Data Link
- What is OSI Layer 3
- Network
- What is OSI Layer 4
- Transport
- What is OSI Layer 5
- Session
- What is OSI Layer 6
- Presentation
- What is OSI Layer 7
- Application
- What Layer # is the Transport Layer?
- 4
- What Layer # is the Data Link?
- 2
- What Layer # is the Presentation?
- 6
- This Layer is responsible for error checking, service addressing & segmentation?
- Transport Layer 4
- This layer converts data to or from application layer to another format (i.e graphic, text, sound video)?
- Presentation Layer 6
- This Layer identifies the physical characteristics of the network including hardware & topology?
- Physical Layer 1
- This Layer handles routing?
- Network Layer 3
- This layer handles establishing, maintaining, and breaking connections between 2 devices?
- Session Layer 5
- This Layer take requests and data & passes them to the lower layers (i.e. File & Print)?
- Application Layer 7
- This layer's responsible for getting data to physical layer for network transmission. It has 2 sub-layers.
- Data-Link Layer 2
- This Layer Manages flow-control through buffering or windowing?
- Transport Layer 4
- This layer 2 sub-layer controls media access & is where NIC address is defined
- Data-Link MAC Sub-layer
- This layer 2 sub-layer is responsible for the error and flow-control mechanisms. Defined in 802.2 standard
- Data Link Logical Link Control (LLC)
- What network layer does the hub function at?
- Physical (Layer 1)
- What network layer does the switch function at?
- Data Link (Layer 2)
- What Layer does the bridge function at?
- Data Link (Layer 2)
- What Layer does the router function at?
- Network(Layer 3)
- What Layer does the NIC function at?
- Data Link (Layer 2)
- Is TCP connection oriented or connectionless?
- Connection Oriented
- IS UDP connection oriented or connectionless?
- connectionless
- Is IPX connection oriented or connectionless?
- connectionless
- Is SPX connection oriented or connectionless
- connection oriented
- Is Internet Protocol (IP) connection oriented or connectionless?
- connectionless
- What Layer does TCP function at?
- Transport (Layer 4)
- Is TCP connection Oriented or Connectionless
- Connection-Oriented
- What Layer is IP Protocol
- Network Layer
- What does TCP do?
- provides flow control, sequencing, and error detection and correction (reliability)
- What 2 things does IP do?
- 1)transporting data between network devices; 2)addressing
- What layer is UDP? What does it do?
- Layer 4 (Transport); same as TCP but connectionless.
- FTP runs at what layer? What protocol does it use for reliability
- Layer 7 (Application); TCP
- What FTP command is used to change the working directory on the local host?
- lcd
- What ftp commands uploads & downloads multiple files to the remote host.
- mput/mget
- Which OSI layers handle movement of data between apps?
- application, presentation, session.
- which OSI layers provide for the movement of data between network segments
- transport, network
- which OSI layers provide the physical and logical topology & enable data movement across a single segment
- Data-Link, Physical