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【導(dǎo)讀】2．本試卷的試題中共有75個(gè)空格，需要全部解答，每個(gè)空格1分，滿(mǎn)分75分。3．每個(gè)空格對(duì)應(yīng)一個(gè)序號(hào)，有A、B、C、D四個(gè)選項(xiàng)，請(qǐng)選擇一個(gè)最恰當(dāng)?shù)倪x項(xiàng)作為解答，在答題卡相應(yīng)序號(hào)下填涂該選項(xiàng)。4．解答前務(wù)必閱讀例題和答題卡上的例題填涂樣式及填涂注意事項(xiàng)。解答時(shí)用正規(guī)2B鉛筆正。確填涂選項(xiàng)，如需修改，請(qǐng)用橡皮擦干凈，否則會(huì)導(dǎo)致不能正確評(píng)分。稱(chēng)為立即數(shù)尋址方式。2指令所要的操作數(shù)已存儲(chǔ)在某寄存器中，或把目標(biāo)操作數(shù)存入寄存器。DI)的值和指令中的8位/16位偏移量之和，稱(chēng)為相對(duì)基址加變址尋址方式。門(mén)制定；地方標(biāo)準(zhǔn)由省、自治區(qū)和直轄市標(biāo)準(zhǔn)化行政主管部門(mén)制定；企業(yè)標(biāo)準(zhǔn)由企業(yè)自己制定。
【正文】 A． 254 B． 512 C． 1022 D． 1024 【解析】 22 位作為網(wǎng)絡(luò)地址 , 掩碼為 ， 最多可以連接的主機(jī)數(shù)為 2^102=1022. (61)C (62)C ●以下選項(xiàng)中，可以用于 Inter 信息服務(wù)器遠(yuǎn)程管理的是 (63)。 (63)A． Tel B． RAS C． FTP D． SMTP 【解析】 B． RAS ●在 TCP／ IP 網(wǎng)絡(luò)中，為各種公共服務(wù)保留的端口號(hào)范圍是 (64)。 (64)A． 1~255 B． 1~1023 C． 1~1024 D． 1~65535 【解析】 B． 1~1023 ●在以下網(wǎng)絡(luò)應(yīng)用中，要求帶寬最高的應(yīng)用是 (65)。 (65)A．可視電話(huà) B．?dāng)?shù)字電視 C 撥號(hào)上網(wǎng) D．收發(fā)郵件 【解析】 B．?dāng)?shù)字電視 ● DOM is a platform and language (66) API that allows programs and scripts to dynamically access and update the content, structure and style of WWW documents (currently, definitions for HTML and XML documents are part of the specification). The document can be further processed and the results of that processing can be incorporated back into the presented (67) . DOM is a (68) based AP1 to documents, which requires the whole document to be represented in (69) while processing it. A simpler alternative to DOM is the eventbased SAX, which can be used to process very large （ 70） documents that do not fit into the memory available for processing. (66) A. specific B. neutral C. contained D. related (67) A. text B. image C. page D. graphic (68) A. table B. tree C. control D. event (69)A. document B. processor C. disc D. memory (70) A. XML B. HTML C. script D. Web 【解析】（ 66） B（ 67） C （ 68） B （ 69） D （ 70） A ● Melissa and LoveLetter made use of the trust that exists between friends or colleagues. Imagine receiving an (71 ) from a friend who asks you to open it. This is what happens with Melissa and several other similar (72) . Upon running, such worms usually proceed to send themselves out to addresses from the victim39。s address book, previous s, web pages (73) As administrators seek to block dangerous attachments through the recognition of wellknown (74) , virus writers use other extensions to circumvent such protection. Executable (.exe) files are renamed to .bat and .cmd plus a whole list of other extensions and 中國(guó)最大的管理資源中心 (大量免費(fèi)資源共享 ) 第 10 頁(yè) 共 10 頁(yè) will still run and successfully infect target users. Frequently, hackers try to perate works by sending an attachment that looks like a flash movie, which, while displaying some cute animation, simultaneously runs mands in the background to steal your passwords and give the (75) access to your work. (71 ) A. attachment B. packet C. datagram D. message (72) A. virtual B. virus C. worms D. bacteria (73) A. memory B. caches C. ports D. registers (74) A. names B. cookies C. software D. extensions (75) A. cracker B. user C. customer D. client 【解析】（ 71） A（ 72） B （ 73） D （ 74） C（ 75） A
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