Network+ Study (Jason Dion) - Networks and Their Basic Components – questions with answers

Network+ Study (Jason Dion) - Networks and Their
Basic Components – questions with answers


Model - CORRECT ANSWERS ✔✔Used to represent how a network functions



2 Popular Network Models - CORRECT ANSWERS ✔✔OSI (7 layer) model, TCP/IP
model



OSI Model Layers - CORRECT ANSWERS ✔✔1. Physical

2. Data Link

3. Network

4. Transport

5. Session

6. Presentation

7. Application



OSI Physical Layer (Layer 1) - CORRECT ANSWERS ✔✔-OSI model protocol
responsible for defining the electrical signals that travel the network cables and
connectors



OSI Data Link Layer (Layer 2) - CORRECT ANSWERS ✔✔-Information is arranged
in frames and transported across the medium. Collision detection. Checksum
verification of delivery.

-Anything with a MAC address (Network Cards, Switches, etc)

, OSI Network Layer (Layer 3) - CORRECT ANSWERS ✔✔-OSI model protocol
responsible for routing functions and logical addressing.

-Dealing with IP addresses (Routers work at Layer 3)



OSI Transport Layer (Layer 4) - CORRECT ANSWERS ✔✔-Concerns the reliability
of data transfer between systems. (1.) Connection Oriented (2.) Guaranteed Delivery
(3.) Order of Delivery



OSI Session Layer (Layer 5) - CORRECT ANSWERS ✔✔-manages user sessions and
dialogues

-maintains logical links between systems



OSI Presentation Layer (Layer 6) - CORRECT ANSWERS ✔✔performs a series of
miscellaneous functions necessary for presenting the data package properly to the
sender or receiver. Ex) ASCII to non-ASCII character conversions,
encryption/decryption of secure docs, compression of data into smaller units



OSI Application Layer (Layer 7) - CORRECT ANSWERS ✔✔-defines interfaces
between application software and network communication functions

-provides standardized services such as file transfer between systems

-making applications "network aware"



TCP/IP Model Layers - CORRECT ANSWERS ✔✔1. Link/Network Interface

2. Internet

3. Transport

4. Application