Ccna

CCNA3 – Answers chapter 5 v.4.0
1. Refer to the exhibit. All switches in the network have empty MAC tables. STP has been disabled on the switches in the network. How will a broadcast frame that is sent by host PC1 be handled on the network?
[pic]
|[pic]|Switch SW1 will block the broadcast and drop the frame.|
|[pic]|Switch SW1 will forward the broadcast out all switch ports, except the originating port. This will generate an endless loop in the network. |
|[pic]|Switch SW1 will forward the broadcast out all switch ports, except the originating port. All hosts in the network will replay with a unicast frame sent|
| |to host PC1.|
|[pic]|Switch SW1 will forward the traffic out all switch ports except the originating port as a unicast frame. All hosts in the network will replay with a |
| |unicast frame sent to switch SW1.|

2. Refer to the exhibit. Server sends an ARP request for the MAC address of its default gateway. If STP is not enabled, what will be the result of this ARP request?
[pic]
|[pic]|Router_1 will drop the broadcast and reply with the MAC address of the next hop router. |
|[pic]|Switch_A will reply with the MAC addressof the Router_1 E0 interface. |
|[pic]|Switch_A and Switch_B will continuously flood the message onto the network. |
|[pic]|The message will cycle around the network until its TTL is exceeded.|

3. What two elements will exist in a converged network with one spanning tree? (Choose two.)
|[pic]|one root bridge per network |
|[pic]|all non-designated ports forwarding|
|[pic]|one root port per non-root bridge |
|[pic]|multiple designated ports per segment |
|[pic]|one designatedport per network |

4. Which two criteria does a switch use to select the root bridge? (Choose two.)
|[pic]|bridge priority |
|[pic]|switchingspeed |
|[pic]|number of ports |
|[pic]|base MAC address|
|[pic]|switch location |
|[pic]|memory size |

5. In...