單項(xiàng)選擇題Three switches are connected to one anther via trunk ports.Assuming the default switch configuration,which switch is elected as the root bridge for the spanning-tree instance of vlan 1?()

A.the switch with the lowest MAC address
B.the switch with the higest MAC address
C.the switch witch the higest IP address
D.the switch with the lowest IP address


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1.單項(xiàng)選擇題What is the purpose of the cisco Vlan Trunking protocol?()

A.to provide a mechanism to dynamically assign vlan membership to switch ports
B.to allow traffic to be carried from multiple vlans over a single link between switches
C.to allow native vlan information to be carried over a trunk link
D.to provide a mechanism to manually assign vlan membership to switch ports
E.to allow for managing the additions,deletions,and changes of vlans between switchs

2.多項(xiàng)選擇題802.1Q協(xié)議的特點(diǎn)是什么?()

A.它是一個(gè)2層的消息協(xié)議,它保證通過網(wǎng)絡(luò)的VLAN配置
B.它包括一個(gè)8比特字段指定的幀的優(yōu)先級(jí)
C.它是專門用于標(biāo)記的VLAN幀和下交換網(wǎng)絡(luò)拓?fù)浣Y(jié)構(gòu)的變化劑量不能滿足網(wǎng)絡(luò)的重新收斂
D.它修改802.3幀報(bào)頭,并且因此需要在FCS重新計(jì)算
E.它是一種能夠攜帶未標(biāo)記的幀的中繼協(xié)議

3.多項(xiàng)選擇題Which three are characteristics of an IPV6 anycast address?()

A.any-to-many communication model
B.delivery of packets to the group interface that is closest to the sending device
C.one-to-many communication model
D.the same address for multiple devices in the group
E.one-to-nearest communication model
F.a unique IPV6 address for each device in the group

5.單項(xiàng)選擇題下列哪項(xiàng)關(guān)于Cisco Catalyst交換機(jī)VLAN操作是正確的?()

A.當(dāng)從一個(gè)802.1Q中繼收到一個(gè)包時(shí),VLAN ID可以從源MAC地址表確定
B.未知單播幀被重新傳輸只對(duì)屬于同一VLAN的端口
C.交換機(jī)之間的端口應(yīng)該在接入模式被配置為使得VLAN可以橫跨端口跨越
D.廣播和多播幀被重發(fā)到在不同的VLAN配置的端口

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