List of practice Questions

Consider two tables R and S with cardinalities \(m\) and \(n\) respectively. What is the maximum cardinality of the result of relational algebraic operation \(R \cup S\)?

Which OSI layer operates Hypertext Transfer Protocol (HTTP)?

Which algorithm controls congestion?

What is the maximum size of TCP header?

Which DBMS component handles disk space allocation?

What is the notation for class hierarchies in ER diagrams?

Which file organization is preferred for only insertion operations?

Which normal form is based on the concept of multivalued dependency?

Choose a recovery mechanism from the following:

Which among the following is a multilevel indexing technique?

For which deadlock management strategy, the Ostrich algorithm is used?

Consider a disk queue with requests for I/O to blocks on cylinders as 98, 183, 37, 122, 14, 124, 65, 67 and head starts at 53. What are the total head movements for FCFS and SSTF algorithms?

What is the major problem with priority scheduling algorithm?

A solution to the critical section problem should satisfy three requirements. Choose the correct set from the following: \[ \text{I. Mutual Exclusion} \] \[ \text{II. Progress} \] \[ \text{III. Hold and Wait} \] \[ \text{IV. Circular Wait} \] \[ \text{V. Bounded Waiting} \]

What is the solution for the problem of external fragmentation?

Choose a procedural language from the following

In which one of the following modes, the hardware allows privileged instruction to be executed?

Which among the following is a light weight process?

Choose the correct statements about fork and vfork system calls. Statement-I: vfork is faster than fork. Statement-II: fork is safer than vfork. Statement-III: vfork shares parent's memory, fork copies memory.

Which CPU scheduling algorithm uses time quantum for processes?

Which page replacement algorithm suffers with Belady's anomaly?

If the value of an attribute is obtained from its children, then it is called

The control link in an activation record points to

Which one of the following is prefix representation of the infix expression \(P*(Q+R)/S\)?

Which addressing mode provides the fastest access?