Cisco Certifications Tutorials

38 http:\\ciscocertifications.info 25. What is half duplexing? A: Frames feed into a single cable in one direction at a time. 26. What are the three main methods of flow control? A: Windowing Buffering Source Quench Messaging 27. What are the correct encapsulation types for frame-relay? A: Cisco & Ietf 28. In IOS editing mode, how do you return to the beginning of command line? A: Ctrl + a 29. What type of WAN protocol uses PVCs? A: Frame Relay 30. Given the following IP address: 162.53.21.12 You plan for no more than 126 hosts on the subnet that includes this address. What subnet mask would you use? A: 255.255.255.128 31. How would you backup the IOS image to a TFTP server? A: copy flash tftp 32. What command would you use to get totally out of config mode and return to PRIV mode on the router? A: ctrl + z 33. How does "Store-and-Forward" LAN switching method work? A: Switch waits for the whole frame before forwarding. Latency varies with different frame sizes. 34. You have a class B IP address with a 12 bit subnet. How many subnets and hosts are available? A: 4094 subnets, 14 hosts 35. You have the following access list command: access-list 800 permit 3d 4a You also have the following interface configurations: interface Ethernet 0 ipx network 4a ipx access-group 800 out