What layer of the TMN （telecommunications management network） model does CTM fit into？（）
What are three valid match criteria in a firewall filter applied to a Layer 3 interface?（）A、IP addressB、MAC addressC、protocolD、portE、session ID
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What are two functions of the Intel IXP processors？（）A、keepalivesB、route-lookupC、CRC validationD、Layer 2 decapsulation
What is the function of the no switchport catalyst switch interface configuration command?（）A、Disables the interfaces to prevent traffic flowB、Clears all the configurations on the interfaceC、Switches the port from access mode to trunk modeD、Converts the port from physical Layer 2 port to physical Layer 3 port
You download a file from an FTP site on the Internet. What is the highest layer in the OSI model used in this FTP operation?（）A、ApplicationB、PresentationC、SessionD、TransportE、InternetF、Data LinkG、Physical
You are logged into a router and with to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?（）A、show ip linksB、show cdp neighborC、show cdp neighbor detailD、show ip clientsE、show ip routeF、None of the above
For what two purposes does the Ethernet protocol use physical addresses？（）A、to uniquely identify devices at Layer 2B、to allow communication with devices on a different networkC、to differentiate a Layer 2 frame from a Layer 3 packetD、to establish a priority system to determine which device gets to transmit firstE、to allow communication between different devices on the same networkF、to allow detection of a remote device when its physical address is unknown
As a frame leaves a Layer 3 device, the Layer 2 encapsulation information is changed from what it was when it entered the devicE.For what two reasons can this happen? （）A、The data is moving from 10BASE-TX to 100BASE-TX.B、The WAN encapsulation type has changed.C、The data format has changed from analog to digital.D、The source and destination hosts are in the same subnet.E、The source and destination MAC addresses have changed.
