The....layer of OSI model can use the trailer of the frame for error detection. Select one: O a. Network Layer b. Data Link Layer O c. Physical Layer O d. Transport Layer A typical Single mode optical Fiber cable Core / Cladding diameters are 50-62.5/125 microns (1 micron = 10-6 meters). Select one: True O False Port number 25 is used for SMTP and HTTP protocols. Select one: O True O False Which of the following TCP/IP protocols is a connection-oriented works at transport layer that provides reliable full-duplex data transmission between End-to-End users? Select one: O a. UDP Protocol O b. HTTP Protocol O c. TCP Protocol d. IP Protocol