81
Which protocol is connection-oriented and reliable??
Correct: (B) TCP
82
What is the default port for HTTPS??
Correct: (D) 443
83
Which OSI layer is associated with routing??
Correct: (C) Network
84
Which OSI layer is associated with TCP and UDP??
Correct: (B) Transport
85
Which topology connects devices to a central switch??
Correct: (C) Star
86
Which device forwards LAN frames using MAC addresses??
Correct: (A) Switch
87
Which protocol is used to send email??
Correct: (A) SMTP
88
Which statement about UDP is correct??
Correct: (C) It has no built-in guarantee of delivery
89
A CPU scheduler selects a process from the ready queue and assigns the CPU to it. Which state transition occurs??
Correct: (B) Ready to Running
90
Three processes arrive at time 0 with CPU burst times P1 = 6 ms, P2 = 2 ms, and P3 = 4 ms. Under non-preemptive Shortest Job First scheduling, which process executes first??
Correct: (A) P2