A.物理層
B.網(wǎng)絡(luò)層
C.傳輸層
D.接入層
E.分發(fā)層
F.數(shù)據(jù)鏈路層
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A.2B+D
B.30B+D
C.同軸電纜
D.普通電纜
A.dialer time ridle
B.dialer time rcompete
C.dialer time renable
D.dialer time rwait-carrier
A.Visually verify the MAC addresses and then telnet to the switches to enter the switchport-port security mac-address command
B.Have end users e-mail their MAC addresses. Telnet to the switch to enter the switchport-port security mac-address command
C.Use the switchport port-security MAC address sticky command on all the switch ports that have end devices connected to them
D.Use show mac-address-table to determine the addresses that are associated with each port and then enter the commands on each switch for MAC address port-security
A.denial of service
B.brute force
C.reconnaissance
D.Trojan horse
A.64000 bps
B.115200 bps
C.2048000 bps
D.4096000 bps
A.10.10.0.0/18 subnetted with mask 255.255.255.252
B.10.10.0.0/25 subnetted with mask 255.255.255.252
C.10.10.0.0/24 subnetted with mask 255.255.255.252
D.10.10.0.0/23 subnetted with mask 255.255.255.252
E.10.10.0.0/16 subnetted with mask 255.255.255.252
A.A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
B.A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
C.A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
D.A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line
A.增加網(wǎng)絡(luò)帶寬
B.提高網(wǎng)絡(luò)可用性
C.降低網(wǎng)絡(luò)傳輸費(fèi)用
D.防止數(shù)據(jù)傳輸意外中止
A.支持路由協(xié)議
B.至少具備一個(gè)備份口
C.到少支持兩個(gè)網(wǎng)絡(luò)接口
D.協(xié)議至少要實(shí)現(xiàn)到網(wǎng)絡(luò)層
E.具有存儲(chǔ)、轉(zhuǎn)發(fā)和尋徑功能
F.至少支持兩種以上的子網(wǎng)協(xié)議
最新試題
請(qǐng)參見(jiàn)圖示。當(dāng)計(jì)算機(jī)A 向計(jì)算機(jī)D 發(fā)送幀時(shí),哪些計(jì)算機(jī)會(huì)接收該幀?()
何時(shí)必須使用clock rate 命令配置路由器串行接口?()
請(qǐng)參見(jiàn)圖示。網(wǎng)絡(luò)技術(shù)人員試圖確定主機(jī)A 的正確IP 地址配置。以下哪一項(xiàng)是主機(jī)A 的有效配置?()
請(qǐng)參見(jiàn)圖示。主機(jī)A 嘗試與主機(jī)C 建立TCP/IP 會(huì)話(huà)。在嘗試期間,路由器Y 的FastEthernet 接口fa0/1捕獲到一個(gè)幀。捕獲的幀中包含源IP 地址為172.16.1.5而目的IP 地址為172.16.7.24的數(shù)據(jù)包。捕獲該幀時(shí),它的源MAC 地址是什么?()
請(qǐng)參見(jiàn)圖示。一臺(tái)主機(jī)正使用NAT 連接到Internet。下列哪三項(xiàng)IP 地址可實(shí)現(xiàn)此連接?()
請(qǐng)參見(jiàn)圖示。電纜1和電纜2分別按照特定的物理層要求接線(xiàn)。哪三個(gè)網(wǎng)段使用電纜2?()
請(qǐng)參見(jiàn)圖示。在網(wǎng)絡(luò)中,PC1向PC2發(fā)送了一條消息。PC2收到的幀如圖所示。該幀中的哪一信息確定了正確的目的應(yīng)用程序?()
傳輸層如何讓主機(jī)能同時(shí)針對(duì)不同應(yīng)用程序維護(hù)多個(gè)通信流?()
請(qǐng)參見(jiàn)圖示。網(wǎng)絡(luò)中的所有設(shè)備均使用默認(rèn)配置。此拓?fù)渲行枰嗌賯€(gè)邏輯地址范圍?()
請(qǐng)參見(jiàn)圖示。網(wǎng)絡(luò)中的主機(jī)A 正在向主機(jī)B 發(fā)送數(shù)據(jù)段。有關(guān)所交換的數(shù)據(jù)段的流量控制如圖所示。下列關(guān)于此通信的陳述,哪兩項(xiàng)是正確的?()