# Placement Papers - Hughes

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### HUGHES - Placement Paper Pattern - Paper - 1

Posted By : Niki Raghu Rating : +8, -0

HUGHES
Paper Pattern (Aptitude) Part - 1

Aptitude Questions

Age problem

Time and distance

Coin

Direction problem

(2n + 2 n-1/2 n+1 ? 2n) what is gives if n = something

( 10n ?1) n>1 when is divisible by 11.no divisible by 8 find the missing
no. when it is divisible by some no

Boat problem

Average

Technical Questions

Which one is called family tree

DHCP protocol

order of insertion and Heap sort

left recursion

find output: for(l=1;a<=l;a++)

cout<<++a; cout <<a;

DEBUG trigger (oracle)

In unrestricted session which system privilege mode is used (oracle)

NEXTVAL and CURRENTVAL in sequence (Oracle)

Unix system call ??like Var( )

OS 384 support which memory management

Complexity to access name from the given double link list

Which WAN network is suitable for the 100Km or m. distance network

If duplicate segments , file are there in hardisk which is best for
management

a) FAT

b) SAT

stop n wait protocol is associated with which layer

find errors from the c and c++ codes.

3 qns on operating systems. I qn on dijkestra algorithm

Using which pin it's possible to address 16 bit addresses even though there
re only 8 address bits in 8085? Ans: ALE

Voltage gain for an amplifier is 100 while it is operating at 10 volts. What
is the O/P voltage wen i/p is 1 volt

Quality factor indicates a) Quality of inductor b) quality of capacitor c)
both

Qns related to bridges, routers and generators, which OSI layer they corresspond
to. (Refer to stevens 4th chapter)

OPAmp's I/P ciurrent, O/p current and CMRR is given, what is the voltage gain

2-3 qns on scope of static variables in C. Qn to view o/p odf a C static var

Qn to print a value of a pointer

OPAmp's I/P ciurrent, O/p current and CMRR is given, what is the voltage gain

A qn to find the physical address from a given virtual address, virtual to

6 bit mantissa and 8 bit exponent can present what maximum value?

4 bit window size in sliding window protocol, how many acknowledements can be
held?

Security functionality is provided by which layer of OSI

Frequency spectrums for AM, FM and PM (figure given, u'veto tell which Kind of
modulation it belongs to)

Among AM and FM which is better and why?

LASt stage of TTL NAND gate is called: Ans: Totem Pole Amplifie

SR to JK flip flop conversion. Ans: S=JQ', R=KQ

LSB of a shift register is connected to its MSB, what is formed: Ans: RING
Counter

2-3 Qns based on Demorgan's laws (identiies: (A+b)' = A'b', etc)

2 qns on Logic gates (O/p of logic gates)

Diff in IRET and RET statements of 8086

How many address bytes are required to address an array of memory chips (4 * 6),
each chip having 4 memory bits and 8k registers.

Diff. in memory mapped and I/P O/P mapped Input/Output (Refer a book on
Microprocessor)

Qn on pipeline architecture

QN on LAPB protocol