Open Systems Interconnection (OSI) Quiz

1. _______ is the protocol suite for the current Internet.
A) TCP/IP
B) NCP
C) UNIX
D) ACM

2. _______ are special-interest groups that quickly test, evaluate, and standardize new technologies.
A) Forums
B) Regulatory agencies
C) Standards organizations
D) All of the above

3. This was the first network.
A) CSNET
B) NSFNET
C) ANSNET
D) ARPANET

4. Why was the OSI model developed?
A) manufacturers disliked the TCP/IP protocol suite
B) the rate of data transfer was increasing exponentially
C) standards were needed to allow any two systems to communicate
D) none of the above


5. The _______ model shows how the network functions of a computer ought to be organized.
A) CCITT
B) OSI
C) ISO
D) ANSI


6. The physical layer is concerned with the movement of _______ over the physical medium.
A) programs
B) dialogs
C) protocols
D) bits


7. The OSI model consists of _______ layers.
A) three
B) five
C) seven
D) eight


8. In the OSI model, as a data packet moves from the lower to the upper layers, headers are _______.
A) added
B) removed
C) rearranged
D) modified


9. The physical layer is concerned with the movement of _______ over the physical medium.
A) programs
B) dialogs
C) protocols
D) bits




10. In the OSI model, when data is transmitted from device A to device B, the header from Aís layer 5 is read by Bís _______ layer.
A) physical
B) transport
C) session
D) presentation


11. In the OSI model, which layer functions as a liaison between user support layers and network support layers?
A) network layer
B) physical layer
C) transport layer
D) session layer


12 . In the OSI model, what is the main function of the transport layer?
A) node-to-node delivery
B) process-to-process message delivery
C) synchronization
D) updating and maintenance of routing tables


13. In the OSI model, encryption and decryption are functions of the ________ layer.
A) transport
B) session
C) presentation
D) application


14. In the OSI model, which of the following is an application layer service?
A) network virtual terminal
B) file transfer, access, and management
C) mail service
D) all of the above


15. When a host on network A sends a message to a host on network B, which address does the router look at?
A) port
B) logical
C) physical
D) none of the above


16. To deliver a message to the correct application program running on a host, the _______ address must be consulted.
A) port
B) IP
C) physical
D) none of the above


17. IPv6 has _______ -bit addresses.
A) 32
B) 64
C) 128
D) variable

18. The ______ layer is responsible for moving frames from one hop (node) to the next.
A) physical
B) data link
C) transport
D) none of the above


19. The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.
A) physical
B) data link
C) network
D) none of the above

20. The_________ layer is responsible for the delivery of a message from one process to another.
A) physical
B) transport
C) network
D) none of the above


21. The Internetworking Protocol (IP) is a ________ protocol.
A) reliable
B) connection-oriented
C) both a and b
D) none of the above


22. _______ is a process-to-process protocol that adds only port addresses, checksum error control, and length information to the data from the upper layer.
A) TCP
B) UDP
C) IP
D) none of the above


23. __________ provides full transport layer services to applications.
A) TCP
B) UDP
C) ARP
D) none of the above


24. The ________ address, also known as the link address, is the address of a node as defined by its LAN or WAN.
A) port
B) physical
C) logical
D) none of the above


25. Ethernet uses a ______ physical address that is imprinted on the network interface card (NIC).
A) 32-bit
B) 64-bit
C) 6-byte
D) none of the above


26. Which of the following can be an Ethernet physical address?
A) 01:02:01:2C:4B
B) 07:01:02:01:2C:4B:2C
C) 07:01:02:01:2C:4B
D) none of the above


27. A port address in TCP/IP is ______ bits long.
A) 32
B) 48
C) 16
D) none of the above

28. An IPV4 address is ______ bits long.
A) 32
B) 48
C) 16
D) none of the above

28. An IP address is a ______ address .
A) logical
B) physical
C) imaginary
D) none of the above

29. MAC address is a ______ address embedded in.
A) switches
B) network card
C) router
D) none of the above

30. IP address and mac address is resolved with ______ protocal.
A) TCP/IP
B) UDP
C) ARP
D) none of the above