When a switch port is used as a VLAN trunk, which of the following trunk modes are valid?（）A、BlockingB、AutoC、DesirableD、OnE、TransparentF、Learning
When a switch port is used as a VLAN trunk, which of the following trunk modes are valid?（）
- A、Blocking
- B、Auto
- C、Desirable
- D、On
- E、Transparent
- F、Learning
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Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, and into the core of an Enterprise network. The branch also allows local hosts to communicate directly with public sites in th e Internet over this same DSL connection. Which of the following answers defines how the branch NAT config avoids performing NAT for the Enterprise directed traffic but does perform NAT for the Internet - directed traffic?（）A、By not enabling NAT on the I Psec tunnel interfaceB、By not enabling NAT on the GRE tunnel interfaceC、By configuring the NAT - referenced ACL to not permit the Enterprise trafficD、By asking the ISP to perform NAT in the cloud
What are three valid reasons to assign ports on VLANs on a switch?（）A、to make VTP easier to implementB、to isolate broadcast trafficC、to increase the size of the collision domainD、to allow more devices to connect to the networkE、to logically group hosts according to functionF、to increase network security
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pany has a Catalyst 6500 and you need to configure redundancy between the supervisor modules. With route processor redundancy （RPR+）， the redundant supervisor engine is fully initialized and configured， which shortens the switchover time if the active supervisor engine fails. Which three statements are true about the RPR + operations when the redundant supervisor engine switched over the failed primary supervisor engine？ （）A、 Static IP routes are maintained across a switchover because they are configured from entries in the configuration file.B、 Information about dynamic routing states， maintained on the active supervisor engine， is synchronized to the redundant supervisor engine and is transferred during the switchover.C、 Information about dynamic routing states， maintained on the active supervisor engine， is not synchronized to the redundant supervisor engine and is lost on switchover.D、 The Forwarding Information Base （FIB） tables are cleared on a switchover. As a result， routed traffic is interrupted until route tables reconverge.E、 Static IP routes are cleared across a switchover and recreated from entries in the configuration file on the redundant supervisor engine.F、 The Forwarding Information Base （FIB） tables are maintained during the switchover. As a result， routed traffic continues without any interruption when the failover occurs.
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