10+ C.P. Bangladesh Co. Interview Questions and Answers

Types of backup include full, incremental, and differential. File sharing permissions include read, write, and execute.

• Full backup: backs up all data

• Incremental backup: backs up only changes since last backup

• Differential backup: backs up changes since last full backup

• File sharing permissions: read allows viewing of files, write allows editing of files, execute allows running of files

ITIL is a framework for IT service management. ITSM is the process of managing IT services. AD is Active Directory. Zoning is a storage networking technique. vmotion is a feature of VMware.

• ITIL - best practices for IT service management

• ITSM - managing IT services to meet business needs

• AD - Microsoft's directory service for Windows domain networks

• Zoning - partitioning storage networks to improve performance and security

• vmotion - live migration of virtual machines between hosts...read more

The Linux booting process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.

• BIOS (Basic Input/Output System) performs hardware initialization and loads bootloader

• Bootloader (GRUB, LILO) loads the Linux kernel into memory

• Kernel initializes devices, mounts the root filesystem, and starts user space processes

• User space initialization involves starting system services and launching the login prompt

File systems are methods used by operating systems to store, retrieve, and organize files on a storage device.

• File systems determine how data is stored and accessed on a storage device.

• Examples of file systems include ext4, NTFS, FAT32, and HFS+.

• Each file system has its own features, limitations, and compatibility with different operating systems.

• File systems can impact performance, security, and data integrity.

My short term goal is to gain more experience in Hadoop administration. My long term goal is to become a lead Hadoop administrator.

• Short term goal: Gain more experience in Hadoop administration

• Long term goal: Become a lead Hadoop administrator

• Examples: Work on complex Hadoop projects, learn new Hadoop tools and technologies, mentor junior Hadoop administrators

HA and FT are high availability and fault tolerance technologies used in computing. Clone and template are methods of creating virtual machines.

• HA ensures that a system is always available by using redundant components and failover mechanisms.

• FT ensures that a system can continue to function even if a component fails by using real-time replication of data and processes.

• Clone creates an exact copy of a virtual machine, including its configuration and data.

• Template is a pre-con...read more

Abstraction focuses on hiding the implementation details, encapsulation bundles data and methods together, and interfaces define a contract for classes to implement.

• Abstraction: Hides the implementation details and only shows the necessary features. Example: Car class with start() and stop() methods without showing the internal engine workings.

• Encapsulation: Bundles data and methods together within a class, preventing direct access from outside. Example: Private variables wit...read more

Yes, I am able to raise tickets for any security-related issues.

• I have experience using ticketing systems such as JIRA and ServiceNow.

• I am familiar with the process of creating and tracking tickets from start to resolution.

• I understand the importance of accurately documenting security incidents and vulnerabilities.

• For example, in my previous role, I raised a ticket for a phishing email that was sent to multiple employees, and worked with the incident response team to investig...read more

Layer 2 is the data link layer of OSI model, while layer 2 switching is a process of forwarding data packets between network segments.

• Layer 2 is responsible for framing, error checking, and flow control.

• Layer 2 switching is faster than layer 3 switching as it operates at the data link layer.

• Layer 2 switches use MAC addresses to forward data packets within a network segment.

• Layer 2 switching is used in LANs to improve network performance and reduce congestion.

• Examples of layer...read more

Active Directory is a directory service developed by Microsoft for Windows domain networks.

• Centralized database for managing network resources

• Stores information about users, computers, and other network objects

• Allows administrators to control access and permissions

• Facilitates single sign-on for users across multiple applications

• Supports group policies for managing security settings

Problem is the root cause of one or more incidents, while incident is an unplanned interruption to an IT service.

• Problem is the underlying cause of one or more incidents, while incident is the actual event that disrupts the service.

• Problems are identified through root cause analysis, while incidents are reported by users or detected by monitoring tools.

• Problems require investigation and resolution to prevent future incidents, while incidents require immediate response and res...read more

DNS stands for Domain Name System. It translates domain names to IP addresses to locate resources on the internet.

• DNS is like a phone book for the internet, translating domain names to IP addresses.

• It helps users access websites by translating human-readable domain names (e.g. www.google.com) to machine-readable IP addresses (e.g. 172.217.3.206).

• DNS servers store records that map domain names to IP addresses, allowing computers to locate resources on the internet.

• DNS also hel...read more

A domain is a group of networked computers that share a common set of rules for communication.

• A domain is a logical grouping of networked computers that share a centralized database of user accounts and security policies.

• Domains are typically used in business environments to centralize management of resources and security.

• Examples of domain systems include Microsoft Active Directory and Novell NetWare.

Configuration files in Hadoop

• Hadoop uses XML-based configuration files

• The main configuration file is core-site.xml

• Other important configuration files are hdfs-site.xml, yarn-site.xml, and mapred-site.xml

• Configuration files can be edited manually or through Hadoop's web UI

• Changes to configuration files require a restart of the affected Hadoop services