What is the name of the computer based EMMS that provides a common forum where u

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Question
What is the name of the computer based EMMS that provides a common forum where users can check in at their convenience, post messages, actively exchange ideas and participate in ongoing discussions?
Options
A. E-mail
B. Bulletin board system (BBS)
C. Teleconferencing
D. Videoconferencing
E. None of the above

Correct Answer

Bulletin board system (BBS)

2. Which of the following statement is incorrect?
Options
A. The CCITT Recommendation X.25 specifies three layers of communication: physical, link and network.
B. The second layer of communication is the data-link layer
C. Errors in the physical layer can be detected by the data link layer
D. The fourth layer, in reference to the OSI model, is the session layer
E. None of the above

6. The network layer, in reference to the OSI model, provide
Options
A. data link procedures that provide for the exchange of data via frames that can be sent and received
B. the interface between the X.25 network and packet mode device
C. the virtual circuit interface to packet-switched service
D. All of the above
E. None of the above

8. Which of the following statement is incorrect?
Options
A. Gateways are assumed to know correct routes; hosts begin with minimal routing information and learn new routes from gateways.
B. Layered protocols are designed so that layer n at the destination receives exactly the same object sent by layer n at the source.
C. Application programs as well as all protocol software from the Internet layer upward use only IP addresses; the network interface layer handles physical addresses.
D. All of the above
E. None of the above

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