tailieunhanh - cwts certified wireless technology specialist official study guide exam pw0 070 phần 3

năng lượng RF để điểm truy cập điện BCD DC quyền lực cuối cùng thiết bị RF với một ăng-ten điện DC một ăng-ten Chế độ điểm truy cập liên quan đến việc kết nối các điểm truy cập đến một hệ thống phân phối cho người dùng truy cập vào mạng LAN? A. | Review Questions 57 18. Power sourcing equipment delivers which of the following A. RF power to the access point B. DC power to the end device C. RF power to an antenna D. DC power to an antenna 19. Which access point mode involves connecting the access point to a distribution system for user access to the LAN A. Bridge only mode B. Repeater only mode C. Root access point mode D. Access mode 20. Which of the following are midspan PoE devices Choose 2. A. Single port injectors B. Multiport injectors C. Endpoint injectors D. Endspan injectors 58 Chapter 2 Wireless LAN Infrastructure Devices Answers to Review Questions 1. D E. Wireless LAN technology functions at Layer 1 and Layer 2 of the OSI model. 2. D. In computer terminology half duplex is two-way communication but only one way at a time. Full duplex is two-way communication in both directions simultaneously. 3. C. An autonomous access point is an intelligent self-contained network infrastructure device. Lightweight access points also called thin access points work with a wireless LAN controller switch. 4. A C D. A C and D are correct. SOHO access points typically are managed from a web browser and do not have a command-line interface feature. 5. B C . Bridges must be on the same RF channel and have the same SSID in order to communicate. 6. B E. Wireless repeaters do extend the cell size and will potentially allow more users to connect. However using a wireless repeater will decrease throughput. 7. B. A wireless LAN controller switch uses centralized administration not distributed administration. 8. B. Many SOHO access points use 15dBm or 32mW for transmit output power. 9. C. The PoE standard specifies 48 VDC as nominal. The range is 32-57 VDC. 10. A. A midspan device will inject power into an Ethernet cable. Endpoint power is delivered directly from a switch or controller. 11. B. Layer 2 is the Data Link layer. A MAC address is a unique identifier of the network card. 12. A C. SOHO use HTTP or HTTPS for .