A.最低端口MAC地址
B.端口的優(yōu)先級(jí)號(hào)和MAC地址
C.VTP修訂號(hào)
D.最高的端口優(yōu)先級(jí)數(shù)量
E.路徑開銷（cost）
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A.RSTP鏈路故障后顯著減少拓?fù)渚酆蠒r(shí)間
B.RSTP通過增加備用和備份角色的消費(fèi)STP端口角色
C.RSTP端口atates被阻塞，丟棄，learing，或轉(zhuǎn)發(fā)
D.RSTP還使用STP proprsal-協(xié)議序列
E.RSTP使用相同的定時(shí)器baseed過程STP上點(diǎn)至點(diǎn)鏈接
F.在點(diǎn)到點(diǎn)鏈路提供比STP更快的傳輸和轉(zhuǎn)發(fā)
A.VTP
B.802.1Q
C.RSTP
D.STP
Refer to the exhibit.A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. If any other device is detected， the port is to drop frames from this device. The administrator configured the interface and tested it with successful pings from PC_A to RouterA， and then observes the output from these two show commands. Which two of these changes are necessary for SwitchA to meet the requirements？（）
A.Port security needs to be globally enabled.
B.Port security needs to be enabled on the interface.
C.Port security needs to be configured to shut down the interface in the event of a violation.
D.Port security needs to be configured to allow only one learned MAC address.
E.Port security interface counters need to be cleared before using the show command.
F.The port security configuration needs to be saved to NVRAM before it can become active.
A.IR
B.DSSS
C.FHSS
D.DSSS and FHSS
E.IR, FHSS, and DSSS
A.802.1Q native VLAN frames are untagged by default.
B.802.1Q trunking ports can also be secure ports.
C.802.1Q trunks can use 10 Mb/s Ethernet interfaces.
D.802.1Q trunks require full-duplex， point-to-point connectivity.
E.802.1Q trunks should have native VLANs that are the same at both ends.
A.172.31.17.4/30
B.172.31.51.16/30
C.172.31.64.0/18
D.172.31.80.0/22
E.172.31.92.0/22
F.172.31.192.0/18
A.在二層唯一確定一臺(tái)設(shè)備
B.是設(shè)備在不同的網(wǎng)絡(luò)中通信
C.區(qū)別二層和三層幀
D.確定設(shè)備的優(yōu)先級(jí)
E.是同一網(wǎng)絡(luò)的不同設(shè)備可以通信
F.當(dāng)不知道遠(yuǎn)程設(shè)備的物理地址時(shí)可以查詢
A.RSTP cannot operate with PVST+.
B.RSTP defines new port roles.
C.RSTP defines no new port states.
D.RSTP is a proprietary implementation of IEEE 802.1D STP.
E.RSTP is compatible with the original IEEE 802.1D STP.
A.It checks the configuration register
B.It attempts to boot from a TFTP server
C.It loads the first image file in flash memory
D.It inspects the configuration file in NVRAM for boot instructions
A.ipv6 host
B.ipv6 unicast-routing
C.ipv6 local
D.ipv6 neighbor
最新試題
請(qǐng)參見圖示。網(wǎng)絡(luò)中的所有設(shè)備均使用默認(rèn)配置。此拓?fù)渲写嬖诙嗌賯€(gè)廣播域？（）
請(qǐng)參見圖示。下列哪組設(shè)備僅包含中間設(shè)備？（）
要將數(shù)據(jù)包發(fā)送到遠(yuǎn)程網(wǎng)絡(luò)，應(yīng)使用哪種設(shè)備？（）
請(qǐng)參見圖示。對(duì)于從主機(jī)A 向Web 服務(wù)器發(fā)出的網(wǎng)頁請(qǐng)求，正確的目的套接字?jǐn)?shù)字是什么？（）
請(qǐng)參見圖示。主機(jī)A 和B 無法互相通信。此問題的原因是什么？（）
請(qǐng)參見圖示。已啟用路由器的NAT 功能供PC 訪問Internet。可以為路由器接口S0/0/0分配下列哪一個(gè)IP 地址？（）
下列哪些是私有IP 地址的地址范圍？（）
請(qǐng)參見圖示。哪種邏輯拓?fù)涫菍?duì)圖示網(wǎng)絡(luò)的準(zhǔn)確描述？（）
請(qǐng)參見圖示。網(wǎng)絡(luò)技術(shù)人員使用圖中所示的連接將主機(jī)A 連接到路由器以創(chuàng)建初始配置。下列有關(guān)此連接的陳述中哪一項(xiàng)正確？（）
PC 無法連接到任何遠(yuǎn)程網(wǎng)站，無法ping 通其默認(rèn)網(wǎng)關(guān)，也無法ping 通本地網(wǎng)段中工作正常的打印機(jī)。以下哪項(xiàng)操作可以確認(rèn)此PC 上的TCP/IP 協(xié)議棧是否工作正常？（）