Telecom Domain Objective Questions for Mock exams - Part 3

Q.21 Which of the following component is used to record lost or stolen 

          mobile information in GSM/GPRS technology?

A. SIM 

B. VLR 

C. HLR

D. AUC 

E. EIR

Q.22 In GSM technology which of the following component holds 

         ciphering keys as well as algorithms for authentication and ciphering.

A. VLR 

B. HLR

C. AUC 

D. EIR

Q.23 Which device is used to divide the voice and data at subscriber 

          end in DSL technology?

A. Data cards 

B. Line Cards 

C. Splitter 

D. DSLAM

Q.24 In sonnet/SDH technology, STS-1 has _____________ rate code?

A. 51.840Mbps 

B. 155.520 Mbps 

C. 933.120Mbps 

D. 124.160Mbps

Q.25 In sonnet/SDH technology, digital cross connect is an equipment ______

A. That multiplexes the signals from multiple sources into a STS signal

       B. Interconnecting tributaries that perform both mapping or 

            multiplexing and switching function.

C. That takes optical signal and regenerates it

D. Modulates and demodulates optical signal.

Q.26 ATM uses __________ as a basic unit of data exchange

A. Packet

B. Cell

C. Message

D. Segment

Q.27 Which of the following statements is perfect as far as ATM technology goes

      A. VP (Virtual Path) is divided into multiple TPS (Transmission Paths)

           and each TP have multiple VCS (Virtual Circuits)

      B. TP (Transmission Path) is divided into multiple VPS (Virtual Paths)

           and each VP have multiple VCS (Virtual Circuits)

      C. VCS (Virtual Circuits) is divided into multiple VPS (Virtual Paths)

           and each VP have multiple TPS (Transmission Paths)

      D. TP (Transmission Path) is divided into multiple 

           VCS (Virtual Circuits) and each VC have multiple VPS (Virtual Paths)

Q.28 What type of multiple access technique (or media access technique) 

          is used in Wi-Fi technology?

A. CSMA/CD 

B. TDMA/FDMA 

C. OFDMA

D. CSMA/CA  

E. FDMA

Q.29 Which element of Wi-Fi network accepts wireless signals 

          and relay information?

A. Access Points 

B. Wi-Fi Card 

C. SafeGuard 

D. Access Point as well as Wi-Fi card

Q.30 Which of the following order/sequence of wireless technologies is 

          perfect as far as increase in the coverage/distance range goes?

A. Bluetooth, Wi-Fi, WiMAX

B. Wi-Fi, WiMAX, Bluetooth

C. Bluetooth, WiMAX, Wi-Fi

D. WiMAX, Wi-Fi, Bluetooth

Answers for Basic Telecom questionnaires’:-  

Question Number	Correct Answer
21	E
22	C
23	C
24	A
25	B
26	B
27	B
28	D
29	D
30	A

Java Array Program - Print a given array in reverse order as entered

Task

Given an array, , of  integers, print 's elements in reverse order as a single line of space-separated numbers.

Input Format

The first line contains an integer,  (the size of our array).
The second line contains  space-separated integers describing array 's elements.

Constraints

• , where  is the  integer in the array.

Output Format

Print the elements of array  in reverse order as a single line of space-separated numbers.

JAVA Program

import java.util.*;

public class ArrayExample {

public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        int n = in.nextInt();

        int[] arr = new int[n];

        for(int i=0; i < n; i++){

            arr[i] = in.nextInt();

        }

        for(int j=n-1;j>=0;j--){

            System.out.print(arr[j]+" ");

  }

        in.close();

    }

}

How to get JAVA vendor information and properties of java installed

How to get JAVA vendor information

On Linux or Unix , you can use below command to get JAVA VENDOR information like JAVA proprietary information. Example

java.vendor = Oracle Corporation

Command :-   

$ java -XshowSettings:properties -version 2> /tmp/file1.txt ; cat /tmp/file1.txt | grep java.vendor"

How to check version of JAVA installed

Command :-    $ java -version

How to check Properties of JAVA installed

 

[myuser@localhost ~]$ java -XshowSettings:properties -version

Property settings:

    awt.toolkit = sun.awt.X11.XToolkit

    file.encoding = UTF-8

    file.encoding.pkg = sun.io

    file.separator = /

    java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment

    java.awt.printerjob = sun.print.PSPrinterJob

    java.class.path = .

    java.class.version = 51.0

    java.endorsed.dirs = /home/myuser/java/jdk1.7.0_75/jre/lib/endorsed

    java.ext.dirs = /home/myuser/java/jdk1.7.0_75/jre/lib/ext

        /usr/java/packages/lib/ext

    java.home = /home/myuser/java/jdk1.7.0_75/jre

    java.io.tmpdir = /tmp

    java.library.path = /usr/java/packages/lib/amd64

        /usr/lib64

        /lib64

        /lib

        /usr/lib

    java.runtime.name = Java(TM) SE Runtime Environment

    java.runtime.version = 1.7.0_75-b13

    java.specification.name = Java Platform API Specification

    java.specification.vendor = Oracle Corporation

    java.specification.version = 1.7

    java.vendor = Oracle Corporation

    java.vendor.url = http://java.oracle.com/

    java.vendor.url.bug = http://bugreport.sun.com/bugreport/

    java.version = 1.7.0_75

    java.vm.info = mixed mode

    java.vm.name = Java HotSpot(TM) 64-Bit Server VM

    java.vm.specification.name = Java Virtual Machine Specification

    java.vm.specification.vendor = Oracle Corporation

    java.vm.specification.version = 1.7

    java.vm.vendor = Oracle Corporation

    java.vm.version = 24.75-b04

    line.separator = \n

    os.arch = amd64

    os.name = Linux

    os.version = 2.6.32-431.23.3.el6.x86_64

    path.separator = :

    sun.arch.data.model = 64

    sun.boot.class.path = /home/myuser/java/jdk1.7.0_75/jre/lib/resources.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/rt.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/sunrsasign.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/jsse.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/jce.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/charsets.jar

        /home/myuser/java/jdk1.7.0_75/jre/lib/jfr.jar

        /home/myuser/java/jdk1.7.0_75/jre/classes

    sun.boot.library.path = /home/myuser/java/jdk1.7.0_75/jre/lib/amd64

    sun.cpu.endian = little

    sun.cpu.isalist =

    sun.io.unicode.encoding = UnicodeLittle

    sun.java.launcher = SUN_STANDARD

    sun.jnu.encoding = UTF-8

    sun.management.compiler = HotSpot 64-Bit Tiered Compilers

    sun.os.patch.level = unknown

    user.country = US

    user.dir = /home/myuser/

    user.home = /home/myuser/

    user.language = en

    user.name = myuser

    user.timezone =

java version "1.7.0_75"

Java(TM) SE Runtime Environment (build 1.7.0_75-b13)

Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode)