Network Models

Question 1

OSI Layer 4

Answer 1

Transport Layer: handels segmentation / reassembly. Creates Segments or Datagrams.

Question 2

Layer 2 Broadcast Address

Answer 2

FF:FF:FF:FF:FF:FF

Question 3

UDP Datagram

Answer 3

Destination Port | Source Port | Length | Checksum | Data |

Question 4

Generic Frame

Answer 4

Question 5

TCP Segment

Answer 5

Destination Port | Source Port | Sequence Number | Checksum | Flags | Acknowledgement | Data |

Question 6

PDU

Answer 6

Protocol Data Unit: the unit of data specified by each layer of the OSI model

Question 7

OSI Layer 5

Answer 7

Session Layer: handels session; connecting application to application

Question 8

IP packet

Answer 8

destination IP address | Source address | Data |

Question 9

OSI Layer 6

Answer 9

Presentation Layer: Data Conversion

Question 10

OSI Layer 2

Answer 10

Data Link Layer:

• Logical Link Control: LLC is the aspect of the NIC that talks to the OS (usually via device drivers). LLC handels multople network protocols and provides flow control.
• Media Access Control: creates and addresses the frame.

Question 11

OSI Layer 7

Answer 11

Application Layer: API’s