Discussion
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- Question
Most data communications involving telegraph lines use:
Options- A. simplex lines
- B. wideband channels
- C. narrowband channels
- D. dialed service
- E. None of the above
- Correct Answer
- narrowband channels
- 1. When a host knows its physical address but not its IP address, it can use _____.
Options- A. RARP
- B. ARP
- C. IGMP
- D. ICMP
- E. None of the above Discuss
- 2. Layer one of the OSI model is
Options- A. physical layer
- B. link layer
- C. transport layer
- D. network layer
- E. None of the above Discuss
- 3. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?
Options- A. 2 seconds
- B. 20 seconds
- C. 120 seconds
- D. 12 seconds
- E. None of the above Discuss
- 4. You have a network ID of 134.57.0.0 with 8 subnets. You need to allow the largest possible number of host IDs per subnet. Which subnet mask should you assign?
Options- A. 255.255.224.0
- B. 255.255.240.0
- C. 255.255.248.0
- D. 255.255.252.0
- E. 255.255.255.255 Discuss
- 5. The channel in the data communication model can be
Options- A. postal mail service
- B. telephone lines
- C. radio signals
- D. All of the above
- E. None of the above Discuss
- 6. Which of the following files is used for NetBIOS name resolution?
Options- A. HOSTS
- B. LMHOSTS
- C. ARP
- D. FQDN
- E. None of the above Discuss
- 7. In OSI model, which of the following layer transforms information from machine format into that understandable by user
Options- A. application
- B. presentation
- C. session
- D. physical
- E. None of the above Discuss
- 8. In CRC the quotient at the sender
Options- A. becomes the dividend at the receiver
- B. becomes the divisor at the receiver
- C. is discarded
- D. is the remainder Discuss
- 9. A communications medium that uses pulses of laser light in glass fibers. Select the best fit for answer:
Options- A. Fiber optic cables
- B. Cellular phone systems
- C. Telecommunications processors
- D. Telecommunications software Discuss
- 10. Which of the following protocol is connection-oriented?
Options- A. IPX
- B. UDP
- C. NetBEUI
- D. TCP Discuss
Networking problems
Search Results
Correct Answer: RARP
Correct Answer: physical layer
Correct Answer: 20 seconds
Correct Answer: 255.255.240.0
Correct Answer: All of the above
Correct Answer: LMHOSTS
Correct Answer: presentation
Correct Answer: is discarded
Correct Answer: Fiber optic cables
Correct Answer: TCP
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