ONPASSIVE Interview Questions and Answers

There are 7 layers in the OSI model. Layer names are Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• The OSI model has 7 layers.

• The layers are Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with adjacent layers.

• The layers are organized in a hierarchical manner.

• Examples of protocols at each layer include Ethernet at the Data Link layer and HTTP at the Applicatio...read more

A hub is a simple device that connects multiple devices in a network. A switch is a more advanced device that directs data to specific devices. A router connects multiple networks and directs data between them.

• A hub operates at the physical layer of the OSI model, while a switch operates at the data link layer.

• A hub broadcasts data to all devices connected to it, while a switch sends data only to the device it is intended for.

• A router uses IP addresses to direct data between ...read more

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

• It stores information about network resources such as computers, users, and groups.

• It provides authentication and authorization services for Windows-based computers.

• It allows administrators to manage network resources from a central location.

• It uses a hierarchical structure of domains, trees, and forests to organize network resources.

• It supports group policies that can be used to enforc...read more

To judge RAM faulty, run memory diagnostics and check for errors.

• Run memory diagnostics software like Memtest86+ or Windows Memory Diagnostic

• Check for errors in the diagnostic report

• Test each RAM module individually to identify the faulty one

• Look for symptoms like frequent crashes, blue screens, and system freezes

Ad work refers to the process of creating and managing advertisements for a company or product.

• Ad work involves researching target audiences and creating compelling ad copy and visuals.

• It also includes selecting the appropriate advertising channels, such as social media or print media.

• Ad work requires analyzing the effectiveness of ads and making adjustments as needed.

• Examples of ad work include creating a TV commercial, designing a billboard, or running a Facebook ad campaig...read more

DNS resolves domain names to IP addresses, while DHCP assigns IP addresses to devices on a network.

• DNS stands for Domain Name System and is responsible for translating domain names into IP addresses.

• DHCP stands for Dynamic Host Configuration Protocol and is responsible for assigning IP addresses to devices on a network.

• DNS is used to locate resources on a network, while DHCP is used to manage IP addresses and network configuration.

• DNS operates on port 53, while DHCP operates ...read more

The default size of a PST file varies depending on the version of Outlook.

• In Outlook 2003 and earlier, the default size limit is 2GB.

• In Outlook 2007 and 2010, the default size limit is 20GB.

• In Outlook 2013 and later, the default size limit is 50GB.

• The size limit can be changed by modifying the registry or using third-party tools.

IP range refers to a set of IP addresses that fall within a specific numerical range.

• IP range is defined by a starting IP address and an ending IP address

• It is used to identify a group of devices on a network

• CIDR notation is commonly used to represent IP ranges, such as 192.168.0.0/24

• IP ranges can be used for security purposes, such as firewall rules or access control lists