單項(xiàng)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


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1.多項(xiàng)選擇題Which two commands can be used to verify a trunk link configuration status on a given cisco switch?（）

A.show interfaces interface
B.show interfaces trunk
C.show interfaces switchport
D.show ip interface brief
E.show interfaces vlan

2.多項(xiàng)選擇題Which two states are the port states when RSTP has converged?（）

A.blocking
B.learning
C.discarding
D.forwarding
E.listening

3.多項(xiàng)選擇題In an Ethernet network, under what two scenarios can devices transmit? （）

A.when they receive a special token
B.when there is a carrier
C.when they detect no other devices are sending
D.when the medium is idle
E.when the server grants access

4.多項(xiàng)選擇題Which of the following are benefits of VLANs? （）

A.They increase the size of collision domains.
B.They allow logical grouping of users by function.
C.They can enhance network security.
D.They increase the size of broadcast domains while decreasing the number of collision domains.
E.They increase the number of broadcast domains while decreasing the size of the broadcast domains.
F.They simplify switch administration.

5.多項(xiàng)選擇題What are three benefits of implementing vlans?（）

A.A more efficient use of bandwidth can be achieved allowing many physical groups to use the same network infrastructure
B.Broadcast storms can be mitigated by decreasing the number of broadcast domains,thus increasing their size.
C.A higher level of network security can be reached by separating sensitive data traffic from other network traffic.
D.Port-based vlans increase switch-port use efficient,thanks to 802.1Q trunks
E.A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure.
F.Broadcast storms can be mitigated by increasing the number of broadcast domains,thus reducing their size.
G.VLANs make it easier for IT staff to configure new logical groups,because the vlans all belong to the same broadcast domain.

6.單項(xiàng)選擇題A switch is configured with all ports assigned to vlan 2 with full duplex FastEthernet to segment existing departmental traffic. What is the effect of adding switch ports to a new VLAN on the switch?（）

A.More collision domains will be created.
B.IP address utilization will be more efficient.
C.More bandwidth will be required than was needed previously.
D.An additional broadcast domain will be created.

7.單項(xiàng)選擇題Which switch would STP choose to become the root bridge in the selection process?（）

A.32768: 11-22-33-44-55-66
B.32768: 22-33-44-55-66-77
C.32769: 11-22-33-44-55-65
D.32769: 22-33-44-55-66-78

9.單項(xiàng)選擇題What is the function of the command switchport trunk native vlan 999 on a switch?（）

A.It designates VLAN 999 for untagged traffic.
B.It blocks VLAN 999 traffic from passing on the trunk.
C.It creates a VLAN 999 interface.
D.It designates VLAN 999 as the default for all unkown tagged traffic.

10.單項(xiàng)選擇題

Refer to the exhibit.Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4.What will Switch-1 do with this data?（）

A.switch-1 will drop the data because it dose not have an entry for that MAC address
B.switch-1 will flood the data out all of its port from which the data originated
C.switch-1 will forward the data to its default gateway
D.tch-1 will send an ARP request out all its ports except the port from which the data originated