6．LLC層的全稱是

A．異步傳輸模式                                            B．寬帶綜合業(yè)務(wù)數(shù)字網(wǎng)

C．邏輯鏈路控制層                                         D．介質(zhì)訪問控制層

7．IPv6的地址長(zhǎng)度是

A．32bit                                                          B．64bit

C．128bit                                                         D．256bit

8．報(bào)文交換又稱為

A．?dāng)?shù)包交換                                                   B．信息交換

C．?dāng)?shù)據(jù)交換                                                   D．鏈路交換

9．?dāng)?shù)據(jù)鏈路層中繼系統(tǒng)是

A．網(wǎng)橋                                                          B．網(wǎng)關(guān)

C．轉(zhuǎn)發(fā)器                                                       D．路由器

10．以下網(wǎng)絡(luò)操作系統(tǒng)中，由Sun Microsystem公司開發(fā)的是

A．Windows Server 2003                                  B．Net Ware

C．NFS                                                           D．VINES

11．Windows Server 2003系統(tǒng)安裝了遠(yuǎn)程協(xié)助會(huì)話后，系統(tǒng)同時(shí)創(chuàng)建的新帳戶名稱是

A．Help Assistant                                              B．Operators

C．Servers                                                       D．Publishers

12．Linux系統(tǒng)中，文件名的字符數(shù)最大值為

A．8                                                                B．64

C．255                                                            D．無(wú)限制

13．下列行為不屬于主動(dòng)攻擊的是

A．更改報(bào)文流                                                B．拒絕報(bào)文服務(wù)

C．偽造連接初始化                                         D．未經(jīng)許可地析出信息

14．網(wǎng)絡(luò)的故障管理中，故障主要發(fā)生在硬件、軟件和

A．電纜系統(tǒng)                                                   B．服務(wù)器

C．工作站                                                       D．網(wǎng)絡(luò)操作系統(tǒng)

15．電子郵件地址的正確格式是

A．主機(jī)名．用戶名                                         B．用戶名．主機(jī)名

C．主機(jī)名@用戶名                                         D．用戶名@主機(jī)名