Senior Network and Security Administrator Interview Questions and Answers

Switching technologies used by network engineers include VLANs, STP, VTP, EtherChannel, and Port Security.

• VLANs (Virtual Local Area Networks) allow for logical segmentation of a physical network

• STP (Spanning Tree Protocol) prevents loops in redundant network topologies

• VTP (VLAN Trunking Protocol) allows for automatic VLAN configuration across multiple switches

• EtherChannel allows for the bundling of multiple physical links into a single logical link for increased bandwidth and...read more

A wireless controller is a device that manages and controls wireless access points (APs) in a network.

• Wireless controllers provide centralized management and configuration of wireless networks.

• They can monitor and control the performance of APs, adjust radio frequencies, and manage security settings.

• Wireless controllers can also provide features such as load balancing, roaming, and guest access.

• Examples of wireless controllers include Cisco Wireless Controller, Aruba Mobility...read more

VLAN stands for Virtual Local Area Network. It is a logical grouping of devices on a network based on their function, project or application.

• VLANs allow network administrators to segment a network into smaller, more manageable groups.

• Each VLAN has its own broadcast domain, which means that broadcasts are contained within the VLAN and do not spread to other VLANs.

• VLANs can be configured based on port, protocol, MAC address, or subnet.

• Types of VLANs include default VLAN, data V...read more

Proxy server acts as an intermediary between clients and servers, while firewalls are security systems that monitor and control network traffic.

• Proxy server caches frequently accessed web pages to improve performance and can be used to filter content or block access to certain websites.

• Firewalls can be hardware or software-based and can be configured to allow or block traffic based on predefined rules.

• Firewalls can also be used to create virtual private networks (VPNs) to sec...read more

Yes, I am ready for rotational shift.

• I have prior experience working in rotational shifts.

• I am flexible with my work schedule and can adjust accordingly.

• I understand the importance of maintaining network and security operations 24/7.

• I am willing to work extra hours if required during critical situations.