問題詳情
三、無線區域網路（Wireless LAN）已是目前非常普遍的網路技術，請問：
⑴為何無線區域網路在實體層要使用展頻（Spread spectrum）技術？（5 分）
⑴為何無線區域網路在實體層要使用展頻（Spread spectrum）技術？（5 分）
參考答案
答案：C
難度：簡單0.78098
統計：A(7),B(13),C(271),D(26),E(0)
內容推薦
- 0Alice ___________ up late this morning, so she may __________ a taxi to her office.(A) woke ; to
- ⑵內容傳遞網路（Content Delivery Network, CDN）
- Nick didn’t feel well this morning. The nurse took his ______________ right away and said he had
- 三、有一導線測量成果如下表，試完成計算求得 P1 及 P2 坐標。（20 分）
- 24 一台手機的 IP 位址是 18，可以正常連線至 Internet，主要是靠下列何者網路協定？(A)NAT (B)ICMP (C)SNMP (D)IGMP
- 0A: Was Sam at the party?B: Yes. We _________ him to the party to celebrate the Moon Festival.(A)
- ( ) We’re in the zoo. _______ monkeys in the cage.Do you like ______?(A) There are ; them (B) Th
- I’m telling you the plan about the summer trip. Lend me your ___________.(A) mouths(B) ears (C)
- ( ) Mary:______ is it?James: It’s eight twenty.(A) How old (B) Where(C) Who (D) What time
- This magazine is very ___________ with teenagers. There are many new clothing styles in it.(A) p
內容推薦
- ⑶服務層級協議（Service Level Agreement, SLA）
- 二、一位比較教育研究者分析臺灣原住民族與漢族國中生的學習表現，其結果如下表所示。表中的八個變項都是分數愈高，代表在該變項有愈高反應。例如家中手足數為數值愈高，家中手足數愈多。請回答以下的問題：【題組】
- A: __________ Frank carry the trash to the truck? B: Yes. He __________ three bags to it.(A)Was
- Mr. Lin has Dora ________________ the piano every day because there will be a contest next month
- Life in senior high school appears to be ______________ . I think I need to study harder and pre
- People like to go firefly watching in the _____________ in late spring.(A) parking space (B) out
- The black-faced spoonbills have been listed as one of the _______________ animals in Taiwan. It’
- James needs to stay away from sports for one month ___________ he broke his leg.(A) and(B) becau
- Vicky’s room _______________ pink since she had many collections of Hello Kitty.(A) has been pai
- 【題組】(A) becomes(B) became (C) has (D) had
- 0A: Who cut down the apple tree? B: Richard _________. His father let him do it.(A) cut(B) cuts (
- 25 下列何者網路攻擊不是中間人攻擊（Man-In-The-Middle Attack）？(A)ARP poisoning (B)ICMP redirect (C)DNS spoofing (D)IP
- 23 一個 IPv4 的封包在轉送途中如果被分段（Fragmentation），會在那裏被還原組合（Reassembly）？(A)下個路由器（Router） (B)目的主機（Host） (C)目的交換
- Lucy was sorry for _________________ to her parents. She should apologize to them for that.(A) t
- 【題組】(A) So(B) However (C) Really (D) And
- 六、克漏字測驗 (每題2%，共10%)Ivy’s first time to be a volunteer was a special experience for her. She joined t
- ⑴魚叉式釣魚攻擊（Spear phishing attack）
- People in Taiwan have freedom of _____________. We have the right to say openly what we think.(A
- The famous singer’s coming made the party more ________________. We felt ___________ at it.(A) e
- 【題組】(A) drank(B) had (C) ate (D) took
- 三、某研究者想了解性別與顏色偏好分布的關聯性，於是在其學區隨機抽樣 100 人（男生 52 人，女生 48 人），施以顏色偏好問卷（受試者只能選一種他最喜歡的顏色），結果如下表 1 之觀察個數：（每小
- In Chinese culture, the dish – shark fin soup is thought as a __________ of wealth(財富) and class
- ( ) Kate: ______ are my clothes?Mom: They are in your bedroom.(A) How old (B) Where(C) Who (D) W
- 【題組】⑵ Evil Twins Access Point 攻擊會對 WLAN 造成何種安全危害？請說明之。（5 分）
- 二、防火牆（Firewall）是一般組織最常見的安全防護工具，而現代防火牆多採用 StatefulPacket Inspection（SPI）技術，請詳細回答下列問題：【題組】⑴何謂 SPI？為何要使