(Paper) HFCL Placement Paper Questions

Paper : HFCL Placement Paper Questions

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