信息系统复习参考7(7)

B) CDMA's strength is in its international roaming capabilities.

C) CDMA randomly随机 assigns分配 users to a range of frequencies over time. D) GSM was developed by the military during World War II. 下列哪项陈述属实？

A) GSM 是美国的主要数字蜂窝标准。 B) CDMA 的实力在于其国际漫游能力。

C) CDMA 随机分配用户的频率范围内一段时间。 D) GSM 是在二战期间由军方开发的。

Answer: C Diff: 3 Page Ref: 276 AACSB: Use of IT CASE: Comprehension Objective: 7.4

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63) Which of the following standards is most appropriate for creating a PAN? 以下哪个标准最适合于创建平底锅？蓝牙 A) WiMax

B) IEEE 802.11b C) WiFi D) Bluetooth Answer: D Diff: 2 Page Ref: 276 AACSB: Use of IT CASE: Comprehension Objective: 7.4

64) Bluetooth can be used to link up to _eight_ devices within a 10-meter area using low-power, radio-based communication. 蓝牙最多可以连接8个用户 A) four B) six C) eight D) ten

Answer: C Diff: 3 Page Ref: 276 AACSB: Use of IT CASE: Comprehension Objective: 7.4

65) The 802.11 set of standards for wireless LANs is known as A) Wi-Fi. B) WiMax. C) Bluetooth. D) RFID. Answer: A Diff: 1 Page Ref: 277 AACSB: Use of IT CASE: Comprehension Objective: 7.4

66) One or more access points positioned on a ceiling, wall, or other strategic spot in a public place to provide maximum wireless coverage for a specific area are referred to as

在公共场所的天花板、墙壁或其他战略地点设置一个或多个接入点, 以便为特定区域提供最大的无线覆盖范围, 称为

A) touch points.

B) hotspots.热点 wlan-wifi C) hot points. D) wireless hubs. Answer: B Diff: 2 Page Ref: 278

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AACSB: Use of IT CASE: Comprehension Objective: 7.4

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67) The next evolution in wireless communication is 下一代的无线通讯 A) 3G networks. B) 2.5G networks. C) WiMax. D) RFID.

无线通信的下一个发展趋势是 A) 3G 网络。 B) 2.5G 网络。 C) WiMax。 D) RFID。

Answer: C Diff: 2 Page Ref: 276 AACSB: Use of IT CASE: Comprehension Objective: 7.4

68) The WiMax standard can transmit up to a distance of approximately A) 30 meters. B) 500 meters.

C) 30 miles. 30英里 D) 5 miles. Answer: C Diff: 3 Page Ref: 279 AACSB: Use of IT CASE: Comprehension Objective: 7.4

69) Passive RFID tags 无源 RFID 标签

B) 有好几英尺的范围。

A) have their own power source. B) have a range of several feet.

C) enable data to be rewritten and modified.

D) are used in automated toll-collection systems. Answer: B Diff: 2 Page Ref: 280 AACSB: Use of IT CASE: Comprehension Objective: 7.5

射频识别，RFID（Radio Frequency Identification）技术，又称无线射频识别，是一种通信技术，可通过无线电讯号识别特定目标并读写相关数据，

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70) Which of the following would you be most likely to use RFID technology for? 您最有可能使用 RFID 技术的是下列哪一种？ A) 跟踪库存

A) tracking inventory B) enabling CRM systems C) lowering network costs

D) enabling client communication Answer: A Diff: 2 Page Ref: 279-280 AACSB: Analytic Skills CASE: Comprehension Objective: 7.5

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