Computer MCQ 002
1. Which of the following types of tables
constraints will prevent the entry of duplicate rows?
(A) Primary key
(B) Unique
(C) Null
(D) Foreign key
(E) None of these
2. Which type of switching uses the entire capacity of a dedicated link?
(A) Circuit switching
(B) Virtual Circuit Packet Switching
(C) Datagram Packet Switching
(D) Message Switching
(E) None of these
(A) Primary key
(B) Unique
(C) Null
(D) Foreign key
(E) None of these
2. Which type of switching uses the entire capacity of a dedicated link?
(A) Circuit switching
(B) Virtual Circuit Packet Switching
(C) Datagram Packet Switching
(D) Message Switching
(E) None of these