001: 2550
003: Starlibrary PMS 4.5
005: 20180420
020: ^a978-007-125442-7
066: ^abe.D
072: ^adata link layer
082: ^a004.6
100: ^abehrouz a. forouzan
240: ^aData communications and networking
245: ^aData communications and networking
260: ^c2007
650: ^anetwork layer
650: ^aphysical layer and edia