1. Which layer of a generic protocol architecture contains the logic necessary to support
the various user functions?
2. Which layer of a generic protocol architecture provides for reliability independent of
the application?
3. Which layer of a generic protocol architecture is responsible for overseeing the
exchange of data between a computer and the network to which it is attached?
a. transport layer
b. application layer
c. network access layer
4. Which layer of the OSI model provides upper layers with isolation from the data
transmission and switching technologies used to connect computer systems?
5. Which layer of the OSI model is concerned with the transmission of unstructured but
stream over the physical medium?
6. Which layer of the OSI model provides independence from differences in data
representations?
7. Which layer of the OSI model provides for the reliable transfer of data across the
physical link and sends frames of data with the necessary synchronization, error
control and flow control?
8. Which layer of the OSI model provides distributed information processing services as
well as access to the OSI component for users?
9. Which layer of the OSI model provides the control structure for communication
between applications and establishes, maintains, and terminates connections between
cooperating applications?
10. Which layer of the OSI model provides reliable transparent transfer of data between
end points as well as end-to-end error recovery and flow control?
a. network
b. data link
c. presentation
d. physical
e. session
f. transport
g. application
11. Which SNA NAU provides an interface to end users?
12. Which SNA NAU manages the physical resources of a node?
13. Which SNA NAU provides network management functions?
a. SSCP
b. PU
c. LU
14. Which layer of the SNA model provides session-related data that are visible and of
interest to end-user processes and terminals?
15. Which layer of the SNA model is responsible for establishing, maintaining and
terminating SNA sessions?
16. Which layer of the SNA model provides format translation, compression, and
transaction program support?
17. Which layer of the SNA model provides for the reliable transfer of data across a
physical link?
18. Which layer of the SNA model specifies the physical interface between nodes which
may be parallel or serial?
19. Which layer of the SNA model provides network management functions for SNA
networks?
20. Which layer of the SNA model Creates logical connections between NAUs.
a. transaction service layer
b. physical control layer
c. path control layer
d. data flow control layer
e. presentation services layer
f. transmission control layer
g. data link control layer
21. Which of the following refers to a facility that provides data transfer service among
stations attached to a network?
22. Which of the following refers to a collection of communication networks
interconnected by bridges and/or routers?
23. Which of the following refers to a constituent network of the Internet?
24. Which of the following refers to a device used to connect two LANs that have similar
LAN protocols?
25. Which of the following refers to a device used to connect two subnetworks that may
or may not be similar?
a. Communication Network
b. Subnetwork
c. Router
d. Bridge
e. Internet