51. What command is used to save the standard output in a file, as well as display it on the terminal?
52. What command is used to count just the number of lines contained in a file?
53. In OSI network architecture, the routing is performed by
54. The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as
55. Which class network is used for a collection of a small number of networks with a large number of nodes?
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