CCNA Quiz Chapter 3 Discovery 3

1. Which devices can be connected to a VLAN trunk? (Choose three.)

>> a switch, a router, a server with a special NIC

1. What happens when there is a topology change on a network that utilizes STP? (Choose two.)

>> user traffic is disrupted until recalculation is complete >> a delay of up to 50 seconds is incurred for convergence of the new Spanning Tree topology

1. Refer to the exhibit. Which set of commands should be used to configure the router to provide communication between the two hosts connected to the switch?

>>           R_1 (config)# interface fastethernet 0/0
R_1 (config-if)# no shutdown
R_1 (config-if)# interface fastethernet 0/0.3
R_1 (config-if)# encapsulation dot1q 30
R_1 (config-if)# ip address 192.168.30.1 255.255.255.0
R_1 (config-if)# interface fastethernet 0/0.4
R_1 (config-if)# encapsulation dot1q 40
R_1 (config-if)# ip address 192.168.40.1 255.255.255.0

1. How do a layer 3 switches differ from traditional routers?

>> layer 3 switches forward packets based on MAC address only, while routers use IP addresses for forwarding

1. Drag the switching method on the left to its description on the right

>>           store and forward : recalculates the CRC value
Cut-through : subdivides into two other methods
Fast-forward : lowest latency but may forward collision fragments
Fragment-free : reads the first 64 bytes of the frame before forwarding
Adaptive cut-through : compares the number of errors found to a threshold value

1. Which two problems are caused by redundant links in a switched network? (Choose two.)

>> switching loops >> broadcast storms

1. Refer to the exhibit. The switches in the diagram are interconnected by trunked links and are configured with the VTP modes shown. A new VLAN is added to Switch1. Which three actions will occur? (Choose three.)

>> Switch3 will pass the VTP update to Switch4 >> Switch4 will add the VLAN to its VLAN database >> Switch2 will add the VLAN to its VLAN database and pass the update to Switch3

1. What two criteria does STP use to elect the root bridge in a redundantly switched network? (Choose two.)

>> bridge priority >> switch MAC address

1. Following in a link failure, when does RSTP allow ports to move to the forwarding state?

>> in less than a second

1. In what two ways does the use of VLANs benefit an organization? (Choose two.)

>> by allowing organizational flexibility by grouping users together by function instead of physical location >> by allowing logical separation of voice and other critical traffic from the rest of the data traffic

1. Refer to the exhibit. Access1 is a new switch that is to be connected as a VTP client to the network once it has been configured. Given the output generated by the VTP server switch Dist-2, which series of configuration commands would successfully introduce the client switch into the VTP domain?

>>           Access1 (config)#vtp mode client
Access1 (config)#vtp domain MYCORP
Access1 (config)#vtp version 2
Access1 (config)#vtp password ITrustYou

1. What elements will exist in a converged switched network running spanning tree? (Choose two.)

>> one root bridge per network >> one root port per non-root bridge

1. How often are spanning-tree BPDUs sent by default?

>> every two seconds

1. Refer to the exhibit. A router is configured to connect to a trunked uplinks as shown. A packet is received on the FastEhternet 0/1 physical interface from VLAN 1. The packet destination address is 192.168.1.85. what will the router do with this packet?

>> the router will forward the packet out interface FastEthernet 0/1.2.