7/11/2018

SRI CHAITANYA OLYMPIAD SCHOOL JUBILEEHILLS

GRADE-7 COMPUTERS CLASS WORK

CHAPTER-11. WEB CONCEPTS

I FILL IN THE BLANKS

1. G-MAIL, YAHOO MAIL, HOTMAIL2. INSTANT MESSAGING3. CHATTING4. SOCIAL NETWORKING5. VIDEO CONFERENCING6. BLOG7. E-COMMERCE

II ABBREVIATIONS1. B2B: BUSINESS TO BUSINESS2. C2C: CONSUMER TO CONSUMER3. B2C: BUSINESS TO CONSUMER4.B2G: BUSINESS TO GOVERNMENT

III TRUE OR FASLSE:1. F2. F3. F

4. T5. T

IV IDENTIFY THE FOLLOWING PICTURES:

V.ANSWER THE FOLLOWING QUESTIONS1. WRITE THE FEATURES OF E-COMMERCE?ANS)

E-MAILSOCIAL

NETWORKING

INSTANT MESSAGING

SOCIAL NETWORKING

INSTANT MESSAGING

E-MAIL

NON-CASH PAYMENT 24X7 SERVICE ADVERTISING

2. DEFINE AN E-MAIL AND WRITE EXAMPLES?ANS)

E-MAIL STANDS FOR ELECTRONIC MAIL. EVERY USER WILL HAVE UNIQUE E-MAIL FROM

WHICH THEY SEND AND RECEIVE MESSAGES.

EXAMPLES:

WWW.GMAIL.COM WWW.YAHOO.COM WWW.HOTMAIL.COM WWW.REDIFFMAIL.COM

3. DEFINE SOCIAL NETWORKING? NAME POPULAR SOCIAL NETWORKING SITES?ANS)

A USER CREATES A PROFILE AND GRANT ACESS TO THE SITE WHERE HE CAN VIEW AND CONNECT WITH THEM

POPULAR SOCIAL NETWORKING SITES: ORKUT MYSPACE.COM FACEBOOK TWITTER LINKEDIN

4. DEFINE BLOG AND VIDEO CONFERENCING?ANS)

BLOG:

A BLOG IS A REGULAR UPDATED WEBSIITEA BLOG MAY CONTAIN TEXT, IMAGES, AUDIO

AND VIDEOS THE MESSAGES POSTED IN BLOG ARE CALLED

BLOG POSTSBLOGS ARE PUBLIC AND IT CAN BE SEEN BY

EVERYONE.

EX: yousufvali.blogspot.in

VIDEO CONFERENCING:

CONDUCTING A MEETING BETWEEN TWO OR MORE PEOPLE WITH DIFFERENT LOCATIONS.

EXAMPLES:

FACETIMEIMOWHATSAPPSKYPEGOOGLE DUO

CHAPTER-22. ADVANCED QBASIC PROGRAMMING

I. BLANKS:1. LOOP2. INPUT3. CONTROL4. IF THEN ELSEIF5. ARRAY

6. STRING7. RIGHTII TRUE OR FALSE:

1.F2.T3.F4.F5.F6.T

III. ANSWER THE FOLLOWING QUESTIONS?

1.DEFINE CONTTROL STATEMENTS AND EXPLAIN ANY TWO STATEMENTS?CONTROL STATEMENTS: THE STATEMENTS THAT ARE USED TO CONTROL FLOW OF A PROGRAM IS CALLED CONTROL STATEMENTS. IF…THEN…STATEMENT:

IT EXECUTE SET OF INSTRUCTIONS IN THE IF BLOCK WHEN THE CONDITION IS TRUE.

IF…THEN… ELSE STATEMENT: IT EXECUTE SET OF INSTRUCTIONS IN

THE IF BLOCK WHEN THE CONDITION IS TRUE.

IF THE GIVEN CONDITION IS FALSE THEN IT WILL EXECUTE SET OF INSTRUCTION IN THE ELESE BLOCK

2. EXPLAIN ABOUT LOOPS IN QBASIC?WHEN A SET OF INSTRUCTIONS ARE

REPEATEDLY EXECUTED FOR CERTAIN NUMBER OF TIMES IS CALLED LOOP.

DIFFERENT TYPES OF LOOP IN Q BASIC1. FOR…NEXT2. DO WHILE…LOOP3. WHILE…WEND

Q3. DEFINE ARRAY? WRITE SHORT NOTES ON TYPES OF ARRAY?

ARRAY HOLD LIST OF VARIABLES OF SAME DATATYPE.

ARRAYS ARE TWO TYPES ONE DIMENSIONAL ARRAY AND TWO

DIMENSIONAL ARRAY ARRAY THAT USED TO STORE DATA IN A

LINEAR FORM IS CALLED 1DIMENSIONAL ARRAY ARRAY THAT USED TO STORE DATA IN A

TABUAR FORM IS CALLED 2DIMENSIONAL ARRAY

Q4. EXPLAIN LEFT$, RIGHT$, MID$ WITH EXAMPLES?LEFT$: THIS IS USED TO EXTRACT SPECIFIED NUMBER OF CHARACTERS FROM LEFTSIDE OF A STRINGEX: MACHINE$=”COMPUTER”PRINT LEFT$(MACHINE$, 3)OUTPUT: COM

RIGHT$: THIS IS USED TO EXTRACT SPECIFIED NUMBER OF CHARACTERS FROM RIGHTSIDE OF A STRINGEX: MACHINE$=”COMPUTER”PRINT RIGHT$(MACHINE$, 3)OUTPUT: TER

MID$: THIS IS USED TO EXTRACT MID PORTION OF CHARACTERS FROM THE STRINGEX: MACHINE$=”COMPUTER”PRINT MID$(MACHINE$, 3,4)OUTPUT: MPUT

HERE, 3 DENOTES THE LOCATION FROM WHERE EXTRACTION SHOULD START AND 4 DENOTES NUMBER OF CHARACTERS SHOULD BE EXTRACTED

CHAPTER-33. MS-ACCESS

I. BLANKS:1. DATABASE2. INTER RELATED3. CONCURENT4. CREATE AND RETRIEVE5. 255II TRUE OR FALSE:1. F2. T3. T4. F5. F

III.ANSWER THE FOLLOWING QUESTIONS1. WHAT IS DBMS? WRITE FUNCTIONS OF DBMS?

A)DBMS: DATABASE MANAGEMENT SYSTEM. FUNCTIONS OF DBMS: CONCURENCY SECURITY

BACKUP & RECOVERQ2) WHAT IS MS-ACCESS? EXPLAIN ABOUT COMPONENTS?A)MS-ACCESS: IT IS USED TO CREATE, STORE AND RETRIEVE LARGE AMOUNT OF DATAMS-ACCESS COMPONENTS:

TABLES QUERIES FORMS REPORTS

Q3) WRITE THE STEPS TO CREATE A TABLE USING DESIGN VIEW?A) STEP-1: RIGHT CLICK ON TABLESTEP-2: SELECT DESIGN VIEWSTEP-3: ENTER THE FIELD NAMES AND DATATYPESSTEP-4: RIGHT CLICK ON TABLE NAME AND SAVE.

CHAPTER-4

4. NETWORK TOPOLOGYI.TRUE OR FALSE1. F2. T3. T

II.QUESTION AND ANSWERSQ1) WHAT IS BLUETOOTH?ANS)

THE BLUETOOTH TECHNOLOGY IS AN INBUILT TECHNOLOGY IN ELECTRONIC GADGET.

IT ALLOWS US TO SHARE INFORMATION WIRELESSLY.

Q2) EXPLAIN WIFI AND IT ’S ADVANTAGES?ANS)

WIFI STANDS FOR WIRELESS FIDILITY. IT IS A POPULAR WIRELESS NETWORK.IT

USES RADIO WAVES TECHNOLOGY AND PROVIDES HIGHSPEED WIRELESS INTERNET CONNECTION.

ADVANTAGES OF WIFI:

SHARE YOUR INTERNET ACCESS YOUR FILES STREAM VIDEO

Q3) WHAT IS WIRELESS TECHNOLOGY?ANS) IN WIRED NETWORK ONE NEEDS DIFFERENT TYPES OF CABLES.THE WIRELESS COMMUNICATION USES RADIO SIGNALS OR INFRARED SIGNALS. IT ALSO USES WIRELESS ADAPTOR WHICH WORKS LIKE ETHERNET ADAPTOR.

NETWORK TOPOLOGYI.BLANKS1. FULL MESH AND PARTIAL MESH2. TOPOLOGY3. BUS4. TWISTED PAIR CABLES5. BUS TOPOLOGY AND STAR TOPOLOGYII.TRUE OR FALSE

1. T2. F3. T4. F5. T

III.QUESTION AND ANSWERS

Q1) WHAT IS TOPOLOGY? WRITE THE TYPES OF TOPOLOGY?ANS) TOPOLOGY REFERS TO THE ARRANGEMENT OF COMPUTERSCONNECTED ON A LAN NETWORK.TYPES OF TOPOLOGIS:1. BUS TOPOLOGY2. STAR TOPOLOGY3. RING TOPOLOGY4. MESH TOPOLOGY5. TREE TOPOLOGYQ2) WRITE SHHORT NOTES ON BUS AND RING TOPOLOGY?ANS) BUS TOPOLOGY: IN THE BUS NETWORK TOPLOGY, EVERY WORKSTATION IS CONNECTED TO MAIN CABLE CALLED AS BUS.RING TOPOLOGY: IN THE RING TOPOLOGY,THE WORKSTATIONS ARE CONNECTED IN THE FORM OF RING WITH THE HELP OF TWISTED PAIR CABLES.Q3) WHAT IS TREE TOPOLOGY?ANS) THE TREE NETWORK TOPOLOGY USES TWO OR MORE STAR NETWORKS CONNECTED TOGETHER. THE CENTRAL NETWORKS OF STAR NETWORK IS CONNECTED TO MAIN BUS.

Q4) WRITE SHORT NOTES ABOUT MESH TOPOLOGIES?ANS) THE MESH NETWORK TOPOLOGY CONTAINS TWO TYPES: FULL AND PARTIAL MESH

IN FULL MESH TOPOLOGY,EACH WORKSTATION IS CONNECTED DIRECTLY TO EACH OTHER

IN PARTIAL MESH TOPOLOGY SOME WORKSTATIONS ARE CONNECTED TO ALL OTHERS.

OSI MODEL

PAGE NO: 74 ACTIVITYARRANGE THE OSI MODEL LAYERS IN SEQUENCE ORDER

1. PHYSICAL LAYER2. DATALINK LAYER3. NETWORK LAYER4. TRANSPORT LAYER5. SESSION LAYER6. PRESENTATION LAYER7. APPLICATION LAYER

CHAPTER-5

5. WORKING WITH HTMLI.BLANKS1. HYPER TEXT MARKUP LANGUAGE2. HEAD AND BODY3. SIX4. CENTER5. LINE BREAK

II.QUESTION AND ANSWERS

Q1) WHAT IS HTML? EXPLAIN STRUCTURE OF HTML DOCUMENT?ANS)

HTML STANDS FOR HYPER TEXT MARKUP LANGUAGE.

IT IS MADEUP OF TAGS THAT ARE USED AS INSTRUCTUIN TO TELL THE BROWSER WHAT SHOULD BE APPEAR ON A WEBPAGESTRUCTURE OF HTML:<HTML><HEAD><TITLE>………….</TITLE></HEAD><BODY>…………..</BODY></HTML>

Q2) EXPLAIN HTML ELEMENTS?ANS) ELEMENTS ARE USED TO CREATE STRUCTURE OF HTML DOCUMENTS. IT HELPS THE BROWSER HOW TO PRESENT HT,L ELEMENTS ON WEBSITE.HTML ELEMENTS ARE OF TWO TYPES:

1. CONTAINER ELEMENT: THE ELEMENTS WHICH HAVE BOTH START AND ENDING TAGSCALLED CONTAINER ELEMENTEX: <HTML> …………………</HTML>

2. EMPTY ELEMENT: THE ELEMENTS WHICH HAVE ONLY START AND DONOT HAVE END TAG ARE CALLED EMPTY ELEMENT.EX: <br>, <img>

Q3) WHAT IS THE DIFFERENCE BETWEEN SUERSCRIPT AND SUBSCRIPT?ANS) SUPERSCRIPT: THE SUPERSCRIPT ELEMENT IS USED TO DISPLAY THE TEXT HALF ABOVE THE NORMAL LINE OF TEXT.SYNTAX: <SUP>……………..</SUP>SUBSCRIPT: IT DISPLAYS THE SPECIFIED TEXT BELOW THE BASELINE.SYNTAX: <SUB>…………………</SUB>

CHAPTER-66. MORE ON HTML

I.BLANKS1. FONT COLOR2. FONT FACE3. MARQUEE4. SCROLL LIST5. <IMG>Q1) EXPLAIN ABOUT FONT ELEMENT?ANS)

FONT ELEMENT IS USED TO CHANGE THE SIZE, COLOUR AND STYLE.

THE FONT ELEMENT IS A CONTAINER ELEMENT IT HAS 3 ATTRIBUTES SIZE,COLOUR,FACE, TO

USE THESE ATTRIBUTES WE CAN USE <FONT> TAG

Q2) WRITE THE SYNTAX OF MARQUEE TAGANS) THE MARQUEE TAG IS USED TO SCROLL A PIECE OF TEXT DISPLAYED HORIZONTALLY ON THE WEBPAGE.SYNTAX: <MARQUEE>………………</MARQUEE>Q3) EXPLAIN ABOUT LIST ELEMENTS?ANS)

THE LIST ELEMENTS ARE USED TO ORGANIZE WEBPAGES

CREATING LIST ON A WEBPAGE IS SIMILAR TO INSERTING BULLETS AND NUMBERS

HTML PROVIDES DIFFERENT TYPES OF LIST ELEMENTS THEY ARE:

UN ORDERED LIST ORDERED LIST NESTED LIST

CHAPTER-77.COMPUTER CODES

I.BLANKS1. FACE VALUE2. 103. BASE-164. BASE-25. 86. BASE-16

III. MULTIPLE CHOICE QUESTIONS1. C2. B3. A4. C5. B6. DPGNO-112 exampleFIND NUMBER, PLACE, FACE VALUE OF 1784

PLACE VALUE 103 102 101 100

FACE VALUE 1 7 8 4SYMBOL VALUE 1x103+ 7x102+ 8x101+ 4x100

SYMBOL VALUE 1000+ 7x100+ 8x10+ 4x1NUMBERVALUE 1000+ 700+ 80+ 4=1784

1. WRITE THE NUMBER VALUE, PLACE VALUE AND FACE VALUE OF 7654 AND 1784

(7654)10

PLACE VALUE 103 102 101 100

FACE VALUE 7 6 5 4SYMBOL VALUE 7X103+ 6X102+ 5X101+ 4x10o

SYMBOL VALUE 7x100+ 6x100+ 5x10 4x1NUMBERVALUE 7000+ 600+ 50+ 4=7654 (1784)10

PLACE VALUE 103 102 101 100

FACE VALUE 1 7 8 4SYMBOL VALUE 1x103+ 7x102+ 8x101+ 4x100

SYMBOL VALUE 1000+ 7x100+ 8x10+ 4x1

NUMBERVALUE 1000+ 700+ 80+ 4=17842. FIND THE BINARY EQUIVALENT NUMBER FROM (1110)2

PLACE VALUE 23 22 21 20

FACE VALUE 1 1 1 0SYMBOL VALUE 1x23+ 1x22+ 1x21+ 0x20

SYMBOL VALUE 8+ 4+ 2+ 0=14

3. FIND THE OCTAL EQUIVALENT NUMBER FROM (3651)8

PLACE VALUE 83 82 81 80

FACE VALUE 3 6 5 1SYMBOL VALUE 3x83+ 6x82+ 5x81+ 1x80

SYMBOL VALUE 3x512+ 6x64+ 5x8+ 1x1SYMBOL VALUE 1536+ 384+ 40+ 1=1961

4. FIND THE HEXA DECIMAL EQUIVALENT NUMBER FROM (B61A)16

PLACE VALUE 163 162 161 160

FACE VALUE B+ 6+ 1+ ASYMBOL VALUE 11X163+ 6X162+ 1X161+ 10X160

SYMBOL VALUE 11X4096+ 6X256+ 1X16+ 10X1SYMBOL VALUE 45056+ 1536+ 16+ 10=46618

HERE, IN HEXADECIMAL A=10, B=11, C=12, D=13, E=14, F=15

CHAPTER-88. CODE CONVERSION

I. BLANKS1. 2, ZERO2. 8, ZERO3. 16, ZERO4. 161