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BARI — Assistant Maintenance Engineer — Exam: 15.11.2025প্রশ্ন ও সমাধান

Set by
BARI
Post
Assistant Maintenance Engineer
Exam date
15 Nov 2025
Questions
29 (0 MCQ, 29 written)
Exam guide
Government IT officer posts · সরকারি প্রতিষ্ঠানের আইটি পদ
  • Networking · নেটওয়ার্কিং 15
  • Cyber Security · সাইবার নিরাপত্তা 2
  • Database · ডেটাবেজ 2
  • General ICT · সাধারণ আইসিটি 2
  • Operating Systems · অপারেটিং সিস্টেম 2
  • Algorithms · অ্যালগরিদম 1
  • Cloud & Emerging Tech · ক্লাউড ও উদীয়মান প্রযুক্তি 1
  • Computer Architecture · কম্পিউটার আর্কিটেকচার 1
  • Data Structures · ডেটা স্ট্রাকচার 1
  • Mathematics · গণিত 1
  • Web Technology · ওয়েব টেকনোলজি 1
Written question 1Networking

How many Layers of OSI?

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Written question 2Networking

Mapping between MAC to IP address?

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Written question 3Cyber Security

How many bits MD5 encryption?

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Written question 4Networking

Write down the full form of LDAP?

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Written question 5General ICT

MOOC stands for ________.

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Written question 6Networking

DNS Port Number?

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Written question 7Networking

Which is Class C Default Subnet Mask?

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Written question 8Networking

What is the maximum number of valid hosts in a network?

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Written question 9General ICT

How to check the IP address in the Windows Command Prompt?

Model answer

Steps to check IP address in Windows Command Prompt:

  1. Press Win + R, type cmd, press Enter (or search "Command Prompt" in the Start menu).
  2. Type the command:
ipconfig
  1. Press Enter — this displays basic network info for all adapters, including IPv4 Address, Subnet Mask, and Default Gateway.

For more detail (MAC address, DNS servers, DHCP status), use:

ipconfig /all

Sample output (relevant part):

Ethernet adapter Ethernet:
   IPv4 Address. . . . . . . . . . . : 192.168.1.25
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Default Gateway . . . . . . . . . : 192.168.1.1

Related useful commands:

Command Purpose
ipconfig Basic IP configuration
ipconfig /all Full details including MAC address, DNS, DHCP lease
ipconfig /release and /renew Release and renew a DHCP-assigned IP
ping (IP) Test connectivity to another host
tracert (IP) Trace the route packets take to a destination

Exam takeaway: ipconfig (or ipconfig /all for full detail, including MAC address) is the standard Windows CLI command to check a machine's IP configuration — the Linux/macOS equivalent is ifconfig or ip addr.

Written question 10Networking

How many bits are in a MAC address?

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Written question 11Cyber Security

Write down the full form of VIRUS?

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Written question 12Web Technology

What is HTML Image tag?

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Written question 13Networking

Which protocol is used by the ping tools?

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Written question 14Networking

Given IP address 10.2.3.20/22 find the Total valid Host address in this IP?

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Written question 15Networking

BGP is ________ protocol.

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Written question 16Networking

Connection between Public IP to Private IP is called ________.

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Written question 17Networking

IEEE ____ Standard used Ethernet LAN?

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Written question 18Cloud & Emerging Tech

LLM stands for ________.

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Written question 19Database

What is Logical design database is called?

Model answer

Answer: The logical design phase of a database produces the Logical Data Model (also called the logical schema) — typically expressed as a relational schema of tables, columns, primary/foreign keys, and constraints.

Database design classically proceeds in three phases:

Phase Output Concerned with
Conceptual design ER (Entity-Relationship) diagram Entities, attributes, relationships — independent of any DBMS
Logical design Logical Data Model / relational schema Mapping the ER model into tables, keys, normalisation — still DBMS-independent
Physical design Physical schema Indexes, storage, partitioning, file organisation — specific to the chosen DBMS
  • In logical design, each entity becomes a table, each attribute a column, relationships become foreign keys (or junction tables for many-to-many), and the schema is typically normalised (up to 3NF/BCNF) to remove redundancy.
  • It remains independent of any specific DBMS product (MySQL, Oracle, SQL Server) — that dependency only enters in the physical design phase.

Exam takeaway: Conceptual (ER model) → Logical (Logical Data Model / relational schema) → Physical (storage-level schema) — logical design is the DBMS-independent blueprint of tables and keys.

Written question 20Algorithms

What is the complexity of Binary algorithm?

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Written question 21Operating Systems

The ____ swaps process in and out of the memory.

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Written question 22Database

SUM, Avg, Max these function are subnet of ______ function.

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Written question 23Computer Architecture

Striping with parity is done in which level of RAID.

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Written question 24Mathematics

Given, n(A)= 20, n(B)= 30 and n(A∪B) = 40 what is n(A∩ B)?

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Written question 25Networking

Which client is used to security cannot to a remote server?

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Written question 26Operating Systems

Which file is need by init to get the default run level?

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Written question 27Networking

Which server can be used to dinamically assign IP address to the PCs is a LAN?

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Written question 28Data Structures

FIFO is used which data structure?

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Written question 29Networking

What is the connector name copper cable in LAN?

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Question text is from the public recruitment exam; answers and explanations are written by ARBS Academy. All past papers · Government IT officer posts guide