單項選擇題What is the maximum data rate specified for IEEE 802.11b WLANs?()

A.10 Mbps
B.11 Mbps
C.54 Mbps
D.100 Mbps


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1.單項選擇題

根據(jù)下圖,假設(shè)所有路由器接口都配置正確且正常工作,假設(shè)R2上OSPF配置正確,配置在R1上默認路由會怎么影響R2的工作?()

A.任何到達一個和路由器R1非直連的網(wǎng)絡(luò)的數(shù)據(jù)包都會被丟棄
B.任何到達一個和路由器R2非直連的網(wǎng)絡(luò)的數(shù)據(jù)包都會被丟棄
C.任何到達一個和路由器R2非直連的網(wǎng)絡(luò)的數(shù)據(jù)包都會即時被丟棄,因為R1上缺少網(wǎng)關(guān)
D.直連在R2上的網(wǎng)絡(luò)將不能夠和172.16.100.0,172.16.100.128,172.16.100.64這些子網(wǎng)通訊
E.任何目的地沒有在R2的路由表中的數(shù)據(jù)包,R2將會定向到R1,R1會發(fā)送哪個數(shù)據(jù)包到R2,這樣路由環(huán)路產(chǎn)生

2.單項選擇題Which command enables RSTP on a switch?()

A.spanning-tree mode rapid-pvst
B.spanning-tree uplinkfast
C.spanning-tree backbonefast
D.spanning-tree mode mst

3.單項選擇題Why would a network administrator configure port security on a switch()。

A.to prevent unauthorized Telnet access to a switch port
B.to limit the number of Layer 2 broadcasts on a particular switch port
C.to prevent unauthorized hosts from accessing the LAN
D.to protect the IP and MAC address of the switch and associated ports
E.to block unauthorized access to the switch management interfaces over common TCP ports

4.單項選擇題Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs()。

A.a switch with a trunk link that is configured between the switches
B.a router with an IP address on the physical interface that is connected to the switch
C.a switch with an access link that is configured between the switches
D.a router with subinterfaces configured on the physical interface that is connected to the switch

5.單項選擇題There are no boot system commands in a router configuration in NVRAM.What is the fall back sequence that router will use to find an ios during reload?()

A.Flash,TFTPserver,ROM
B.Flash,NVRAM,ROM
C.ROM,NVRAM,TFTPserver
D.NVRAM,TFTPserver,ROM
E.TFTPserver,F(xiàn)lash,NVRAM

最新試題

請參見圖示。網(wǎng)絡(luò)中的所有設(shè)備均使用默認配置。此拓撲中存在多少個廣播域?()

題型:單項選擇題

請參見圖示。電纜1和電纜2分別按照特定的物理層要求接線。哪三個網(wǎng)段使用電纜2?()

題型:多項選擇題

請參見圖示。網(wǎng)絡(luò)中的所有設(shè)備均使用默認配置。此拓撲中需要多少個邏輯地址范圍?()

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OSI 模型的哪兩項功能在第2層實現(xiàn)?()

題型:多項選擇題

請參見圖示。主機A 和B 無法互相通信。此問題的原因是什么?()

題型:單項選擇題

路由器使用哪一項信息來確定源主機和目的主機之間的路徑?()

題型:單項選擇題

請參見圖示。從主機X 發(fā)出的到主機Y 的tracert 命令已成功。下列哪一項正確地反映了追蹤列表中顯示的中間網(wǎng)絡(luò)設(shè)備的順序?()

題型:單項選擇題

在配置路由器時,網(wǎng)絡(luò)技術(shù)人員想要命名路由器。輸入hostname 命令后,技術(shù)人員會看到下列哪一項提示?()

題型:單項選擇題

請參見圖示。某用戶想要查看當前的配置。圖中所示為ipconfig/all 命令的輸出。從此輸出可以得到哪三項結(jié)論?()

題型:多項選擇題

要將數(shù)據(jù)包發(fā)送到遠程網(wǎng)絡(luò),應(yīng)使用哪種設(shè)備?()

題型:單項選擇題