Discussion
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- Question
Which of the following communications service provides message preparation and transmission facilities?
Options- A. Teletex
- B. Teletext
- C. x400
- D. Fax
- E. None of the above
- Correct Answer
- Teletex
- 1. A decrease in magnitude of current, voltage, a power of a signal in transmission between points, is known as
Options- A. Attenuation
- B. Amplitude
- C. Aloha
- D. Carrier
- E. None of the above Discuss
- 2. Error control is needed at the transport layer because of potential errors occurring _____.
Options- A. from transmission line noise
- B. in routers
- C. from out-of-sequence delivery
- D. from packet losses. Discuss
- 3. The difference between a multiplexer and a statistical multiplexer is
Options- A. Statistical multiplexers need buffers while multiplexers do not need buffers
- B. Multiplexer use X.25 protocol, while statistical multiplexers use the Aloha protocol
- C. Multiplexers often waste the output link capacity while statistical multiplexers optimize its use
- D. Multiplexers use Time Division Multiplexing (TDM) while statistical multiplexers use Frequency Division Multiplexing (FDM)
- E. None of the above Discuss
- 4. The transport layer protocol is connectionless.
Options- A. NVT
- B. FTP
- C. TCP
- D. UDP
- E. None of the above Discuss
- 5. Which application allows a user to access and change remote files without actual transfer?
Options- A. TELNET
- B. NFS
- C. FTP
- D. DNS
- E. None of the above Discuss
- 6. A network that requires human intervention of route signals is called a
Options- A. bus network
- B. ring network
- C. star network
- D. T-switched network
- E. None of the above Discuss
- 7. When UPC is used, the price of the item is located
Options- A. on the item
- B. on the item and on the shelf
- C. in computer storage
- D. on the shelf and in computer storage
- E. None of the above Discuss
- 8. Which of the following device copies electrical signals from one Ethernet to another?
Options- A. bridge
- B. repeater
- C. hub
- D. passive hub
- E. None of the above Discuss
- 9. Interconnected networks need communication processors such as switches, routers, hubs, and gateways. Select the best fit for answer:
Options- A. TCP/IP
- B. Protocol
- C. Open Systems
- D. Internetwork processor Discuss
- 10. Which of the following network access standard is used for connecting stations to a packet-switched network?
Options- A. X.3
- B. X.21
- C. X.25
- D. X.75
- E. None of the above Discuss
Networking problems
Search Results
Correct Answer: Attenuation
Correct Answer: in routers
Correct Answer: Statistical multiplexers need buffers while multiplexers do not need buffers
Correct Answer: UDP
Correct Answer: NFS
Correct Answer: T-switched network
Correct Answer: on the shelf and in computer storage
Correct Answer: repeater
Correct Answer: Internetwork processor
Correct Answer: X.25
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