A.Branch-Router2 is configured to send both RIPv1 and RIPv2 updates.
B.Gateway-Router is configured to only receive RIPv2 updates.
C.Gateway-router is configured to receive only RIPv1 updates.
D.Branch-Router1 is configured to only send RIPv1 updates

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.

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

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

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.