8.采用固定稿臺(tái)式掃描的復(fù)印機(jī)在工作時(shí)，移動(dòng)光學(xué)系統(tǒng)對(duì)稿件進(jìn)行______掃描。(     )

A.逐行                                                     B.逐點(diǎn)

C.逐字                                                     D.逐頁

9.根據(jù)數(shù)據(jù)的組織形式，可將串行傳送分為______兩種。(     )

A.單工串行和半雙工串行                         B.單工串行和全雙工串行   

C.半雙工串行和全雙工串行                     D.異步串行和同步串行

10.利用專用的數(shù)字?jǐn)?shù)據(jù)網(wǎng)（如DDN網(wǎng)）工作的傳真機(jī)是(     )

A.一類機(jī)                                                 B.二類機(jī)

C.三類機(jī)                                                 D.四類機(jī)

11.最常用的可視電話接入方式是(     )

A.ISDN                                                    B.DDN

C.ADSL                                                   D.Modem

12.總線型以太網(wǎng)中的數(shù)據(jù)包在總線上做______傳播。(     )

A.點(diǎn)對(duì)點(diǎn)式                                              B.廣播式

C.往復(fù)式                                                 D.脈沖式

13.一個(gè)以太網(wǎng)至少包含______個(gè)網(wǎng)絡(luò)服務(wù)器。(     )

A.1                                                          B.2

C.3                                                          D.4

14.windows98下應(yīng)該采用______的登錄方式來登錄NT4.0服務(wù)器。(     )

A.Microsoft網(wǎng)絡(luò)用戶                               B.Novell網(wǎng)絡(luò)用戶

C.Banyan網(wǎng)絡(luò)用戶                                   D.windows網(wǎng)絡(luò)用戶

15.IP支持的最長(zhǎng)的數(shù)據(jù)包為______字節(jié)。(     )

A.128                                                       B.256

C.1024                                                     D.65535