使用 tracert 命令進(jìn)行網(wǎng)絡(luò)檢測(cè)，結(jié)果如下圖所示，那么本地默認(rèn)網(wǎng)關(guān)地址是（ ）。

A．110.150.0.66
B．10.10.0.1
C．192.168.0.1
D．127.0.0.1

IEEE 802.11 MAC 子層定義的競(jìng)爭(zhēng)性訪問(wèn)控制協(xié)議是（ 1）。之所以不采用與 IEEE 802.11相同協(xié)議的原因是(2 )。
（1）A．CSMA/CA
B．CSMA/CB
C．CSMA/CD
D．CSMA/CG
（2）A．IEEE 802.11 協(xié)議的效率更高
B．為了解決隱蔽終端問(wèn)題
C．IEEE 802.3 協(xié)議的開(kāi)銷更大
D．為了引進(jìn)多種非競(jìng)爭(zhēng)業(yè)務(wù)

使用 ADSL 撥號(hào)上網(wǎng)，需要在用戶端安裝（ ）協(xié)議。
A．PPP
B．SLIP
C．PPTP
D．PPPoE

網(wǎng)絡(luò)設(shè)計(jì)過(guò)程包括邏輯網(wǎng)絡(luò)設(shè)計(jì)和物理網(wǎng)絡(luò)設(shè)計(jì)兩個(gè)階段，各個(gè)階段都要產(chǎn)生相應(yīng)的文 檔。下面的選項(xiàng)中，屬于邏輯網(wǎng)絡(luò)設(shè)計(jì)文檔的是（1 ），屬于物理網(wǎng)絡(luò)設(shè)計(jì)文檔（2 ）。
（1）A．網(wǎng)絡(luò) IP 地址分配方案
B．設(shè)備列表清單
C．集中訪談的信息資料
D．網(wǎng)絡(luò)內(nèi)部的通信流量分布
（2）A．網(wǎng)絡(luò) IP 地址分配方案
B．設(shè)備列表清單
C．集中訪談的信息資料
D．網(wǎng)絡(luò)內(nèi)部的通信流量分布

Without proper safeguards, every part of a network is vulnerable to a security breach or unauthorized activity from （1）, competitors, or even employees. Many of the organizations that manage their own （2） network security and use the Internet for more than just sending/receiving e-mails experience a network （3）— and more than half of these companies do not even know they were attacked. Smaller （4） are often complacent, having gained a false sense of security. They usually react to the last virus or the most recent defacing of their website. But they are trapped in a situation where they do not have the necessary time and（5）to spend on security.
（1）A．intruders
B．terminals
C．hosts
D．users
（2）A．exterior
B．internal
C．centre
D．middle
（3）A．a(chǎn)ttack
B．collapse
C．breakdown
D．virus
（4）A．users
B．campuses
C．Companies
D．networks
（5）A．safeguards
B．businesses
C．experiences
D．Resources