Bangladesh Bank - Assistant Director - 2011
মোট প্রশ্ন: ৮৫
২১
২১
Which of the following are you probably using if you are viewing windows and icons ?
ক.
Menu-driven Interface
খ.✓ সঠিক উত্তর
Graphical Interface
গ.
Command Driven Interface
ঘ.
Character User Interface
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Which of the following are you probably using if you are viewing windows and icons ?
ক.
Menu-driven Interface
খ.✓ সঠিক উত্তর
Graphical Interface
গ.
Command Driven Interface
ঘ.
Character User Interface
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২২
২২
When electrical power is disrupted or cut off, data and programs are lost in :
ক.
Secondary storage
খ.
Hard Disk
গ.
Operating System
ঘ.✓ সঠিক উত্তর
RAM
বিষয়: তথ্য প্রযুক্তিটপিক: RAMরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
When electrical power is disrupted or cut off, data and programs are lost in :
ক.
Secondary storage
খ.
Hard Disk
গ.
Operating System
ঘ.✓ সঠিক উত্তর
RAM
বিষয়: তথ্য প্রযুক্তিটপিক: RAMরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৩
২৩
UNIX is a :
ক.
Word processing program
খ.
Database
গ.✓ সঠিক উত্তর
Operating System
ঘ.
Hardware
ব্যাখ্যা
ইউনিক্স ( UNIX) একটি কম্পিউটার অপারেটিং সিস্টেম। এটা প্রথমে নির্মিত হয় ৬০ ও ৭০ এর দশকে বেল ল্যাবে। এর নেতৃত্বে ছিলেন কেন থমসন ও ডেনিস রিচি, তারা পরে কম্পিউটার বিজ্ঞানে মৌলিক অবদানের জন্য টুরিং পুরস্কার লাভ করেন
বিষয়: তথ্য প্রযুক্তিটপিক: অপারেটিং সিস্টেম-Operating Systemরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
UNIX is a :
ক.
Word processing program
খ.
Database
গ.✓ সঠিক উত্তর
Operating System
ঘ.
Hardware
ব্যাখ্যা
ইউনিক্স ( UNIX) একটি কম্পিউটার অপারেটিং সিস্টেম। এটা প্রথমে নির্মিত হয় ৬০ ও ৭০ এর দশকে বেল ল্যাবে। এর নেতৃত্বে ছিলেন কেন থমসন ও ডেনিস রিচি, তারা পরে কম্পিউটার বিজ্ঞানে মৌলিক অবদানের জন্য টুরিং পুরস্কার লাভ করেন
বিষয়: তথ্য প্রযুক্তিটপিক: অপারেটিং সিস্টেম-Operating Systemরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৪
২৪
In MS Word , CTRL + E will result in :
ক.
Table
খ.✓ সঠিক উত্তর
Centre alignment
গ.
Exit from MS Word
ঘ.
Underlined
বিষয়: তথ্য প্রযুক্তিটপিক: ওয়ার্ড প্রসেসিং সফটওয়্যাররেফারেন্স: Bangladesh Bank - Assistant Director - 2011
In MS Word , CTRL + E will result in :
ক.
Table
খ.✓ সঠিক উত্তর
Centre alignment
গ.
Exit from MS Word
ঘ.
Underlined
বিষয়: তথ্য প্রযুক্তিটপিক: ওয়ার্ড প্রসেসিং সফটওয়্যাররেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৫
২৫
WAN stands for :
ক.
Wap Area Network
খ.✓ সঠিক উত্তর
Wide Area Network
গ.
Wide Array Net
ঘ.
Wireless Area Network
ব্যাখ্যা
A wide area network (WAN) is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits.Business, as well as schools and government entities, use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations across the world. In essence, this mode of telecommunication allows a business to effectively carry out its daily function regardless of location. The Internet may be considered a WAN.
বিষয়: তথ্য প্রযুক্তিটপিক: Acronymরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
WAN stands for :
ক.
Wap Area Network
খ.✓ সঠিক উত্তর
Wide Area Network
গ.
Wide Array Net
ঘ.
Wireless Area Network
ব্যাখ্যা
A wide area network (WAN) is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking. Wide area networks are often established with leased telecommunication circuits.Business, as well as schools and government entities, use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations across the world. In essence, this mode of telecommunication allows a business to effectively carry out its daily function regardless of location. The Internet may be considered a WAN.
বিষয়: তথ্য প্রযুক্তিটপিক: Acronymরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৬
২৬
Which file extensions do indicate only graphics files ?
ক.
BMP and DOC
খ.
JPEG and TXT
গ.
TXT and STK
ঘ.✓ সঠিক উত্তর
BMP and GIF
ব্যাখ্যা
The BMP file format, also known as bitmap image file, device independent bitmap (DIB) file format and bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device (such as a graphics adapter), especially on Microsoft Windows and OS/2 operating systems.
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Which file extensions do indicate only graphics files ?
ক.
BMP and DOC
খ.
JPEG and TXT
গ.
TXT and STK
ঘ.✓ সঠিক উত্তর
BMP and GIF
ব্যাখ্যা
The BMP file format, also known as bitmap image file, device independent bitmap (DIB) file format and bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device (such as a graphics adapter), especially on Microsoft Windows and OS/2 operating systems.
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৭
২৭
The goal to ensure the accuracy , integrity and safety of all information system processes and resources is goal of :
ক.
Security management
খ.✓ সঠিক উত্তর
Firewalls
গ.
Encryptions
ঘ.
Cyber theft
ব্যাখ্যা
The goal to ensure the accuracy, integrity and safety of all information system processes and resources is goal of - Firewall
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
The goal to ensure the accuracy , integrity and safety of all information system processes and resources is goal of :
ক.
Security management
খ.✓ সঠিক উত্তর
Firewalls
গ.
Encryptions
ঘ.
Cyber theft
ব্যাখ্যা
The goal to ensure the accuracy, integrity and safety of all information system processes and resources is goal of - Firewall
বিষয়: তথ্য প্রযুক্তিটপিক: ফাইল এক্সটেনশন- File Extensionরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৮
২৮
Bluetooth is the popular name for the ...................... wireless networking standard .
ক.✓ সঠিক উত্তর
802.15
খ.
802.11
গ.
702.15
ঘ.
702.11
বিষয়: তথ্য প্রযুক্তিটপিক: Bluetoothরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Bluetooth is the popular name for the ...................... wireless networking standard .
ক.✓ সঠিক উত্তর
802.15
খ.
802.11
গ.
702.15
ঘ.
702.11
বিষয়: তথ্য প্রযুক্তিটপিক: Bluetoothরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
২৯
২৯
With which device are earthquakes recorded ?
ক.
Barometer
খ.
Oscillator
গ.
Voltmeter
ঘ.✓ সঠিক উত্তর
Seismograph
বিষয়: তথ্য প্রযুক্তিরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
With which device are earthquakes recorded ?
ক.
Barometer
খ.
Oscillator
গ.
Voltmeter
ঘ.✓ সঠিক উত্তর
Seismograph
বিষয়: তথ্য প্রযুক্তিরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩০
৩০
The organizers of a fair projected 25% increase of visitors this year over that of the last year but the actual turnover was 20% less than that of the last year. What percent of projected visitors attended the fair ?
ক.
25%
খ.
45%
গ.
55%
ঘ.✓ সঠিক উত্তর
64%
ব্যাখ্যা
Let, last year visitor were 100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
The organizers of a fair projected 25% increase of visitors this year over that of the last year but the actual turnover was 20% less than that of the last year. What percent of projected visitors attended the fair ?
ক.
25%
খ.
45%
গ.
55%
ঘ.✓ সঠিক উত্তর
64%
ব্যাখ্যা
Let, last year visitor were 100
বিষয়: গণিতটপিক: শতকরা (Percentage)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩১
৩১
Choose the pair of numbers which comes next : 75, 65, 85, 55, 45, 85, 35, .......?
ক.
25, 15
খ.✓ সঠিক উত্তর
25, 85
গ.
35, 25
ঘ.
35, 85
ব্যাখ্যা
75, 55, 35
বিষয়: গণিতটপিক: ক্রম ও ধারা (Sequence & Series)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Choose the pair of numbers which comes next : 75, 65, 85, 55, 45, 85, 35, .......?
ক.
25, 15
খ.✓ সঠিক উত্তর
25, 85
গ.
35, 25
ঘ.
35, 85
ব্যাখ্যা
75, 55, 35
বিষয়: গণিতটপিক: ক্রম ও ধারা (Sequence & Series)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩২
৩২
Monopoly is characterized by an absence of or decline in competition . The ABC Company realizes that its operations are in competitive industries. Which of the following conclusions may be inferred from the above ?
ক.✓ সঠিক উত্তর
ABC's market is not monopolistic
খ.
Monopoly is defined as one seller in a market
গ.
The ABC Company has no domestic competitors
ঘ.
The ABC Company is publicly own
ব্যাখ্যা
From the given information, the following conclusion can be inferred:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Monopoly is characterized by an absence of or decline in competition . The ABC Company realizes that its operations are in competitive industries. Which of the following conclusions may be inferred from the above ?
ক.✓ সঠিক উত্তর
ABC's market is not monopolistic
খ.
Monopoly is defined as one seller in a market
গ.
The ABC Company has no domestic competitors
ঘ.
The ABC Company is publicly own
ব্যাখ্যা
From the given information, the following conclusion can be inferred:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৩
৩৩
The only persons who attended a meeting were four ship captains and the first mates of three of those captains . The captains were R, S, T, and W; the first mates were L, N, and V. Each first mate present spoke immediately after his or her captain . S wa
ক.
S, L, T, V, W, R, N
খ.
S, N, T, V, R, W, L
গ.
S, T, L, R, N, W, V
ঘ.
S, T, L, W, N, R, V
ব্যাখ্যা
Based on the given information, we can determine the order in which the speakers spoke as follows:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
The only persons who attended a meeting were four ship captains and the first mates of three of those captains . The captains were R, S, T, and W; the first mates were L, N, and V. Each first mate present spoke immediately after his or her captain . S wa
ক.
S, L, T, V, W, R, N
খ.
S, N, T, V, R, W, L
গ.
S, T, L, R, N, W, V
ঘ.
S, T, L, W, N, R, V
ব্যাখ্যা
Based on the given information, we can determine the order in which the speakers spoke as follows:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৪
৩৪
Mr. A is 5 years senior to Mr. B, Mr. B is 3 years senior to Mr. C, and Mr. C is 2 years junior to Mr. D in job experience . If Mr. D has 15 years job experience , how many years of experience does Mr. A possess ?
ক.
18
খ.
19
গ.
20
ঘ.✓ সঠিক উত্তর
21
ব্যাখ্যা
A = B + 5 = (C + 3) + 5 = {(D - 2) + 3} + 5 = 15 - 2 + 3 + 5 = 21.
বিষয়: গণিতটপিক: বয়স (Ages)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Mr. A is 5 years senior to Mr. B, Mr. B is 3 years senior to Mr. C, and Mr. C is 2 years junior to Mr. D in job experience . If Mr. D has 15 years job experience , how many years of experience does Mr. A possess ?
ক.
18
খ.
19
গ.
20
ঘ.✓ সঠিক উত্তর
21
ব্যাখ্যা
A = B + 5 = (C + 3) + 5 = {(D - 2) + 3} + 5 = 15 - 2 + 3 + 5 = 21.
বিষয়: গণিতটপিক: বয়স (Ages)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৫
৩৫
In the middle of around pool lies a water-lily . The water-lily doubles in size every day . After exactly 20 days the complete pool will be covered by the lily. After how days will half of the pool be covered by water-lily ?
ক.
3
খ.
7
গ.
10
ঘ.
15
ব্যাখ্যা
After 19 days the pool will be covered half by the lily. By being doubled in size in a day, the water - lily will completely cover the pool after 20 days.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
In the middle of around pool lies a water-lily . The water-lily doubles in size every day . After exactly 20 days the complete pool will be covered by the lily. After how days will half of the pool be covered by water-lily ?
ক.
3
খ.
7
গ.
10
ঘ.
15
ব্যাখ্যা
After 19 days the pool will be covered half by the lily. By being doubled in size in a day, the water - lily will completely cover the pool after 20 days.
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৬
৩৬
How many of the integers between 110 and 120 are prime numbers ?
ক.
0
খ.✓ সঠিক উত্তর
1
গ.
2
ঘ.
3
ব্যাখ্যা
The only prime number between 110 and 120 is 113.
বিষয়: গণিতটপিক: পাটিগণিত প্রাথমিক ধারণা (Basic Concept)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
How many of the integers between 110 and 120 are prime numbers ?
ক.
0
খ.✓ সঠিক উত্তর
1
গ.
2
ঘ.
3
ব্যাখ্যা
The only prime number between 110 and 120 is 113.
বিষয়: গণিতটপিক: পাটিগণিত প্রাথমিক ধারণা (Basic Concept)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৭
৩৭
Unless the new reserves are found soon, the world's supply of coal is being depleted in such a way that with demand continuing to grow at present rates, reserves will be exhausted by the year 2050. Which of the following , if true , will weaken he above a
ক.
There has been a slowdown in the rate of increase in world demand for coal over the last 5 years from 10% to 5%
খ.
It has been known for many years that there are vast stocks of coal under Antarctica which have yet to be economically exploited
গ.
Oil is being used increasingly in place of coal for many industrial and domestic uses
ঘ.
As coal resources are depleted more and marginal supplies , which are more costly to produce and less efficient in use , are being mined
ব্যাখ্যা
To weaken the statement that the world's coal reserves will be exhausted by 2050, given the continued growth in demand, we need to find an option that presents a contrary or mitigating factor. Let's analyze the options provided:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
Unless the new reserves are found soon, the world's supply of coal is being depleted in such a way that with demand continuing to grow at present rates, reserves will be exhausted by the year 2050. Which of the following , if true , will weaken he above a
ক.
There has been a slowdown in the rate of increase in world demand for coal over the last 5 years from 10% to 5%
খ.
It has been known for many years that there are vast stocks of coal under Antarctica which have yet to be economically exploited
গ.
Oil is being used increasingly in place of coal for many industrial and domestic uses
ঘ.
As coal resources are depleted more and marginal supplies , which are more costly to produce and less efficient in use , are being mined
ব্যাখ্যা
To weaken the statement that the world's coal reserves will be exhausted by 2050, given the continued growth in demand, we need to find an option that presents a contrary or mitigating factor. Let's analyze the options provided:
বিষয়: গণিতরেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৮
৩৮
From a group of 7 men and 6 women, five persons are to be selected to from a committee so that at least 3 men are there on the committee. In how many ways can it be done ?
ক.
564
খ.
645
গ.
735
ঘ.✓ সঠিক উত্তর
756
ব্যাখ্যা
The number of ways = 7C3 x 6C2 + 7C4 x 6C1 + 7C5 x 6C0 = 525 + 210 + 21 = 756.
বিষয়: গণিতটপিক: বিন্যাস (Permutation)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
From a group of 7 men and 6 women, five persons are to be selected to from a committee so that at least 3 men are there on the committee. In how many ways can it be done ?
ক.
564
খ.
645
গ.
735
ঘ.✓ সঠিক উত্তর
756
ব্যাখ্যা
The number of ways = 7C3 x 6C2 + 7C4 x 6C1 + 7C5 x 6C0 = 525 + 210 + 21 = 756.
বিষয়: গণিতটপিক: বিন্যাস (Permutation)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৩৯
৩৯
What is the missing number in the following series ? 1, 4, 9, ?, 25
ক.
15
খ.✓ সঠিক উত্তর
16
গ.
17
ঘ.
18
ব্যাখ্যা
12 = 1
বিষয়: গণিতটপিক: ক্রম ও ধারা (Sequence & Series)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
What is the missing number in the following series ? 1, 4, 9, ?, 25
ক.
15
খ.✓ সঠিক উত্তর
16
গ.
17
ঘ.
18
ব্যাখ্যা
12 = 1
বিষয়: গণিতটপিক: ক্রম ও ধারা (Sequence & Series)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
৪০
৪০
A train which travels at a uniform speed due to some mechanical fault after traveling for an hour goes at 3/5th of the original speed and reached the destination 2 hours late. If the fault had occurred after traveling another 50 miles, the train would ha
ক.
280
খ.✓ সঠিক উত্তর
300
গ.
310
ঘ.
320
বিষয়: গণিতটপিক: ট্রেন ও গতিবেগ (Train & Speed)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011
A train which travels at a uniform speed due to some mechanical fault after traveling for an hour goes at 3/5th of the original speed and reached the destination 2 hours late. If the fault had occurred after traveling another 50 miles, the train would ha
ক.
280
খ.✓ সঠিক উত্তর
300
গ.
310
ঘ.
320
বিষয়: গণিতটপিক: ট্রেন ও গতিবেগ (Train & Speed)রেফারেন্স: Bangladesh Bank - Assistant Director - 2011