NCTI Final Exam: Progression Field Tech 4- 5 Exam| 2023/ 2024 Update | Verified Questions and Answers 1. Which of the following, within the TCP/IP mode l layers, delivers packets to their destination across multiple netw
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NCTI Final Exam: Progression Field Tech 4- 5 Exam| 2023/ 2024 Update | Verified Questions and Answers 1. Which of the following, within the TCP/IP mode l layers, delivers packets to their destination across multiple networks, as does the Open Systems Interconnection (OSI) model Network Layer? Answer: Internetwork Layer 2. The header of an Internet Control Message Protocol (ICMP) message includes a Type field. The number in this field represents a message type as well as the format of a packet. What does the type field "14" represent? Answer: Timestamp Reply* 3. What term describes the number of wave crests that pass a fixed point during a particular period of time? Answer: Frequency 4. In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously". Answer: Half Duplex 5. Two CPUs have the same size data bus. Which one will process data faster? Answer: The one with a higher clock speed 6. This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used by only one network interface card anywhere in the world. Answer: Media access control address (MAC) 7. Which is a network management and utility software that is typically used by network administrators and information systems personnel when the network is unused or lightly used, often in the middle of the night? Answer: Back up and recovery Utilities 8. Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding as well as an additional copper mesh shield? Answer: 10Base5 cable 9. According to 10BaseT wiring rules, what is the maximum segment length without a repeater? Answer: 100m 10. When light travels through a fiber-optic cable, the change in refractive index causes the light to refract off which of the following? Answer: The boundary between the core and the cladding 11. Which of the following requires a laser transmitter? Answer: Single-mode fiber 12. In what part of a building would you typically find punch-down blocks? Answer: Wiring closet 13. Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic techniques used whenever different layers of protocols work together. What is the fourth? Answer: Segmentation 14. Which type of address is unique anywhere in the world? Answer: NIC address 15. Which layer of the OSI protocol stack handles frames?
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