CCNA系列认证
单选题A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）A For the two vlans
题目
For the two vlans to communicate，a network statement for the trunk interface needs to be added to the OSPF configuration.
For the two vlans to communicate， a network statement for each subinterface needs to be added to the OSPF configuration.
Direct inter-vlan communication does not require OSPF
OSPF cannot be used if router-on-a-stick is configured on the router
相似问题和答案
第1题：
Router R1 exists in an Enterprise that uses EIGRP as its routing protocol. The show ip route command output on router R1 lists the following phrase: "Gateway of last resort is 1.1.1.1 to network 2.0.0.0".Whic h of the following is most likely to have caused this output to occur on R1?（）
A. R1 has been configured with an ip default- network 2.0.0.0 command.
B. R1 has been configured with an ip route 0.0.0.0 0.0.0.0 1.1.1.1 command.
C. R1 has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
D. Another router has been configured with an ip default - network 2.0.0.0 command.
E. Another router has been configured with an ip route 2.0.0.0 255.0.0.0 1.1.1.1 command.
第2题：
Refer to the exhibit. Switch port FastEthernet 0/24 on AlSwitch1 will be used to create an IEEE 802.1Q- complaint trunk to another switch. Based on the output shown, What is the reason the trunk does not form, even thought the proper cabling has been attached?（）
A.VLANs have not been created yet
B.An IP address must be configured for the port
C.The port is currently configured for access mode
D.The correct encapsulation type has not been configured
E.The no shutdown command has not been entered for the port
第3题：
A new trunk has been configured on a switch in the Ezonexam LAN. By default, which VLANs are allowed over this trunk link?
A. No VLANs
B. Only the VLANs that are specified when creating the trunk
C. Only VLANs 1-64
D. All VLANs
E. All VLAN's except VLAN 1
F. None of the above
D
第4题：
You have just created a new VLAN on your network for inter-VLAN routing. What is one step that you should include in your VLAN-based implementation and verification plan？（）
- A、Verify that different native VLANs exist between two switches for security purposes.
- B、Verify that the switch is configured to allow for trunking on the switch ports.
- C、Verify that each switch port has the proper IP address space assigned to it for the new VLAN.
- D、Verify that the VLAN virtual interface has been correctly created and enabled.
正确答案:B
第5题：
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
第6题：
A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）
A. one
B. three
C. two
D. zero
第7题：
On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）
A.a router with subinterfaces configured on the physical interface that is connected to the switch
B.a router with an IP address on the physical interface connected to the switch
C.a switch with an access link that is configured between the switches
D.a switch with a trunk link that is configured between the switches
第8题：
The Ezonexam network Topology is displayed in the exhibit below:
A switch has been configured for three different VLANs: VLAN 2, VLAN 3, and VLAN 4. For the purposes of communication between VLANs a router is to be added. Host from one VLAN should be able to reach the hosts in the other VLANs.
Based on this requirement, what type of connection is acceptable between the router and switch?
(Select all valid answers)
A．10 Mbps Ethernet
B．56 kbps serial
C．100 Mbps Ethernet
D．1,544 Mbps serial
E．1000 Mbps Ethernet
解析：Explanation:Forallhoststobeabletoreacheachother,inter-VLANroutingwillneedtobeconfigured.InordertoprovideInter-VLANroutingbetweentherouterandtheswitch,atrunkwillneedtobesetup.ThistrunkcanbeeitherISLor802.1Q.Onarouter,theinterfacethatistobeusedasthetrunkcanbe100MbpsEthernet,GigabitEthernet,or10GigabitEthernet.Therefore,onlychoicesCorEarecorrect.
第9题：
A company has a small network，consisting of a single switch and a single router. The switch has been configured with two vlans，and route-on-a-stick is being configured on the router for inter-vlan routing. A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate？（）
A.one
B.three
C.two
D.zero
第10题：
You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）
- A、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.
- B、 Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.
- C、 When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.
- D、 Voice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.
- E、 Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
正确答案:A,E