Himachal Futuristic Communications Limited or HFCL Connect / Ping Previous Campus Placement Test for freshers: B.tech Electronics and Communication engineering, etc.
Technical Written Test and Interview Questions:
(1) TTL to CMOS pullup & vice-versa
(2) function of Ping
(3) SNMP protocol
(4) Application layer
(5) ## —-> token pasting in C
(6) Question on C: i^=j you have to tell the output given the values of i and j;
(7) Complexity of Binary Search tree.
(8) Macro is given as follows : SQR(x) x*x
Find the value of SQR(i-j) , when i and j were given
(9) Multiplexer 1 to 3 inputs— A,B,C control lines— S1,S2 Output — Y .Write Y interms of S1,S2
(10) Bandwidth minimum sampling theorem. (see other electronics / communcation field companies placement test papers and technical interview questions- for freshers / engineering graduates recruitment exams)
(11) Describe the Shannon’s Law
(12) What is the Difference between fork() & execve()
(13) What is the Banker’s algorithm
(14) append(&struct , fp)
(15) What are these? Windows95 , X-Windows
(16) 16k memory , ending address of the address space FFFFH find the starting address?
(17) What is the difference between the following models? TCP/IP and OSI model
(18) Find the difference between Bridge and router
(19) A graph was given : ” a qudrilateral with 1 diagonal ” find the number of trees in the graph
(20) Difference between TCP and UDP
(21-23) Questions related to Pass by reference in C Programming language(3 questions)
(24) Synchronisation technique for IPC ( which method among the 4 choices was best was asked)
(25) Address of RST 6.5
(26) Preorder Traversal
(27) Infix to Postfix
(28) What data structure is used to transform infix to postfix?
(29) 4 bit computer , size of ROM given , output of ROM gives the address , design a mod-n counter
(30-31) FIFO , LRU page trace
(32) How many flip-flops are there in MOD-33 counter?
(33) printf(“\nab\bcd\ref”);
(34) doorom hello test
find argc and argv
(35) call main()
main()
{
toupper(“Hello”);
main();
}
what does this piece of code does? (There can be other programs like this in later hfcl placement papers for finding the output or point out errors.
(36-39) 4 question from Understanding Pointers in C on Pointer , Array , etc.
(40-41) 2 questions on precedence rule