30+ Incanus Technologies Interview Questions and Answers

The default port of Apache web server can be changed in the configuration file httpd.conf.

• Locate the httpd.conf file in the Apache installation directory.

• Search for the 'Listen' directive in the httpd.conf file.

• Change the port number specified after 'Listen' to the desired port number.

• Save the changes and restart the Apache web server for the new port to take effect.

Web content in Apache web server is stored in the DocumentRoot directory specified in the configuration file.

• Web content is stored in the DocumentRoot directory specified in the Apache configuration file.

• The default location for DocumentRoot in Apache is /var/www/html.

• Additional directories can be specified for storing web content using VirtualHost configurations.

By default, you can create up to 100 S3 buckets in AWS.

• By default, AWS allows you to create up to 100 S3 buckets per AWS account.

• This limit can be increased by submitting a service limit increase request to AWS support.

• The limit applies to the total number of buckets in an AWS account, including those in all AWS Regions.

• If you reach the limit, you will need to delete existing buckets or request a limit increase to create more.

Yes, devices in the same VLAN can communicate with each other. The ports used for this communication are called as access ports.

• Devices in the same VLAN can communicate with each other using access ports

• Access ports are used to connect end devices like computers, printers, etc. to the VLAN

• Access ports are typically configured on switches to assign a specific VLAN to a specific port

There are 254 usable IP addresses in the 192.168.1.0/24 subnet.

• A /24 subnet mask means there are 256 total IP addresses available.

• Subtracting the network address (192.168.1.0) and broadcast address (192.168.1.255), leaves 254 usable IP addresses.

• Example: 192.168.1.1 to 192.168.1.254 are the usable IP addresses in the 192.168.1.0/24 subnet.

Steps to backup the running-config of a switch

• Access the switch's command line interface

• Enter privileged EXEC mode by typing 'enable'

• Copy the running-config to a TFTP server using the 'copy running-config tftp' command

• Follow the prompts to specify the TFTP server IP address and the destination filename

• Verify the backup by checking the TFTP server for the saved configuration file

Automate firmware update and backup by using scripting languages and configuration management tools.

• Use scripting languages like Python, PowerShell, or Bash to automate the process of downloading and applying firmware updates.

• Utilize configuration management tools such as Ansible, Puppet, or Chef to automate the deployment of firmware updates across multiple devices.

• Schedule regular backups of firmware configurations and settings using tools like Cron jobs or Task Scheduler.

• S...read more

Firewall works at the network layer.

• Firewall operates at the network layer of the OSI model.

• It filters incoming and outgoing network traffic based on a set of security rules.

• Firewalls can be hardware-based or software-based.

• Examples of firewalls include Cisco ASA, Palo Alto Networks, and pfSense.

The port number of Apache is 80 by default.

• The default port number for Apache is 80.

• Port 80 is used for HTTP traffic.

• Apache can be configured to listen on different port numbers if needed.

Creating policies in a firewall involves defining rules to control traffic flow and access permissions.

• Access the firewall management interface

• Navigate to the firewall policies section

• Create a new policy

• Define the source and destination addresses

• Specify the allowed or denied services/ports

• Set the action to allow or block traffic

• Apply the policy to the appropriate interfaces

• Save and activate the policy

SSL is used to secure individual connections, while Site-to-Site VPN is used to securely connect entire networks.

• SSL is used to encrypt data transmitted between a client and a server over the internet.

• Site-to-Site VPN is used to securely connect two or more networks over the internet or other public networks.

• SSL is commonly used for securing online transactions, email, and web browsing.

• Site-to-Site VPN is commonly used for connecting branch offices to a central office network...read more

Types of VPNs include site-to-site, remote access, and client-to-site. They differ in their use cases and configurations.

• Site-to-site VPN connects two or more networks together over the internet, commonly used for connecting branch offices.

• Remote access VPN allows individual users to connect to a private network from a remote location, often used for telecommuting.

• Client-to-site VPN is similar to remote access VPN but specifically refers to connecting a single client device t...read more

IPsec VPN is a secure network connection that uses encryption and authentication to protect data transmitted over the internet.

• IPsec VPN stands for Internet Protocol Security Virtual Private Network.

• It provides secure communication by encrypting data packets and authenticating the parties involved.

• IPsec VPN can be used to connect remote offices securely over the internet.

• It is commonly used for secure remote access to corporate networks.

• IPsec VPN can be implemented in tunnel ...read more

MSTP stands for Multiple Spanning Tree Protocol, a network protocol that creates a loop-free topology for Ethernet networks.

• MSTP allows for multiple VLANs to share a single spanning tree instance, reducing the number of spanning tree instances needed in a network.

• It uses a single spanning tree for all VLANs, which helps in optimizing network resources and reducing complexity.

• MSTP is an enhancement of the original Spanning Tree Protocol (STP) and provides faster convergence in...read more

DHCP is a network protocol that automatically assigns IP addresses to devices on a network.

• DHCP stands for Dynamic Host Configuration Protocol.

• It allows devices to obtain IP addresses, subnet masks, default gateways, and DNS server addresses automatically.

• DHCP servers lease IP addresses to devices for a specific period of time.

• DHCP uses a four-step process: Discover, Offer, Request, and Acknowledge (DORA).

• DHCP reduces the administrative burden of manually assigning IP address...read more