11- A packet whose destination is outside the local TCP/IP network segment is sent to:
(a) File Server
(b) DNS Server
(c) DHCP Server
(d) Default gateway
12- Which of the given wireless technologies used in IoT consumes the least amount power?
(a) Zigbee
(b) Bluetooth
(c) Wi-Fi
(d) GSM/ CDMA
13- Which of the following testing techniques ensure that the software product runs correctly after the changes during maintenance:
(a) Path testing
(b) Integration testing
(c) Unit testing
(d) Regression testing
14- The multiplexer with 4-bit data input is a:
(a) 4:1 multiplexer
(b) 2:1 multiplexer
(c) 16:1 multiplexer
(d) 8:1 multiplexer
15- When a subroutine is called, then address of the instruction following the CAL instruction is stored in the:
(a) Stack pointer
(b) Program counter
(c) Accumulator
(d) Stack
16- Increasing the RAM of a computer typically improves performance because:
(a) Virtual memory increases
(b) Large RAM’s are faster
(c) Fewer segmentation faults
(d) Fewer page faults occur.
17- Thrashing:
(a) always occur on large computers
(b) is a natural consequence of virtual memory systems
(c) can always be avoided by swapping
(d) can be caused by poor paging algorithm
18- The keyword ‘typedef’ is used to:
(a) declare a member function that is defined in a subclass
(b) designation of the absence of a type
(c) declare objects that can be modified outside of program control
(d) declare a synonym for an existing type
19- Which layers of the OSI reference model are host-to-host layers:
(a) Transport, Session, Presentation, Application
(b) Network, Transport, Session, Presentation
(c) Data-link, Network, Transport, Session
(d) Physical, Data-link, Network, Transport
20- A scheduling algorithm assigns priority proportional to the waiting time of a process. Every process starts with the priority zero (lowest priority). The scheduler re-evaluates the process priority for every ‘T’ time units and decides next process to be scheduled. If the process have no I/O operations and all arrive at time zero, then the scheduler implements _____________ criteria:
(a) Priority scheduling
(b) Round Robin scheduling
(c) Shortest Job First
(d) FCFS
ANSWERS:
11-(d), 12-(b), 13-(d), 14-(a), 15-(a), 16-(d), 17-(d), 18-(d), 19-(a), 20-(b)