單項選擇題Select the action that results from executing these commands. Switch（config-if）# switchport port-security. Switch（config-if）# switchport port-security mac-address sticky（）

A.A dynamically learned MAC address is saved in the startup-configuration file.
B.A dynamically learned MAC address is saved in the running-configuration file.
C.A dynamically learned MAC address is saved in the VLAN database.
D.Statically configured MAC addresses are saved in the startup-configuration file if frames from that address are received.
E.Statically configured MAC addresses are saved in the running-configuration file if frames from that address are received.


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1.單項選擇題which address range efficiently summarizes the routing table of the addresses for router main?（）

A.172.16.0.0/18
B.172.16.0.0/16
C.172.16.0.0/20
D.172.16.0.0/21

2.多項選擇題Which two benefits are provided by creating VLANs？ （）

A.added security
B.dedicated bandwidth
C.provides segmentation
D.allows switches to route traffic between subinterfaces
E.contains collisions

3.多項選擇題

Refer to the exhibit.Assume that the routing protocol referenced in each choice below is configured with its default settings and the given routing protocol is running on all the routers. Which two conditional statements accurately state the path that will be chosen between networks 10.1.0.0 and 10.3.2.0 for the routing protocol mentioned？ （）

A.If OSPF is the routing protocol， the path will be from R1 to R3 to R4 to R5.
B.If OSPF is the routing protocol， the path will be from R1 to R2 to R5.
C.If OSPF is the routing protocol， the path will be from R1 to R5.
D.If RIPv2 is the routing protocol， the path will be from R1 to R3 to R4 to R5.
E.If RIPv2 is the routing protocol， the path will be from R1 to R5.

4.單項選擇題assuming the default switch configuration which vlan range can be added modified and removed on a cisco switch?（）

A.2 through 1001
B.1 through 1001
C.1 through 1002
D.2 through 1005

5.單項選擇題

Refer to the exhibit. SW1 and SW2 have default configurations. What will happen if host 1 sends a broadcast？（）

A. Hosts 2， 3， and 4 will receive the broadcast. 
B. Hosts 1， 2， 3， and 4 will receive the broadcast.
C. Host 2 and the Fa0/0 interface of R1 will receive the broadcast.
D. Hosts 1， 2 and the Fa0/0 interface of R1 will receive the broadcast. 
E. Hosts 1， 2， 3， 4 and interface Fa0/0 of R1 will receive the broadcast.
F. Hosts 2， 3， 4， and interfaces Fa0/0 and Fa0/1 of R1 will receive the broadcast.