Wipro Network Engineer L1 Interview Questions and Answers

I am a passionate Network Engineer with a strong foundation in networking concepts and hands-on experience in troubleshooting and support.

• Graduated with a degree in Computer Science, focusing on networking technologies.

• Completed Cisco Certified Network Associate (CCNA) certification, enhancing my understanding of routing and switching.

• Interned at XYZ Corp, where I assisted in configuring and maintaining network devices...read more

Routing and switching are fundamental concepts in computer networking that involve directing and forwarding data packets.

• Routing is the process of determining the best path for data packets to travel from one network to another.

• Switching is the process of forwarding data packets within a network based on their destination MAC addresses.

• Routing protocols like OSPF and BGP are used to exchange routing information between...read more

Ping is a network utility used to test connectivity between devices and measure round-trip time for packets.

• Ping sends ICMP Echo Request packets to a target IP address.

• It measures the time taken for the packets to return, indicating latency.

• A successful ping response confirms that the target is reachable.

• Example: 'ping 192.168.1.1' checks connectivity to a local router.

• Ping can also help diagnose network issues, such a...read more

LAN/WAN refers to local area network and wide area network respectively. VLAN is a virtual LAN that allows for logical segmentation of a network.

• LAN is a network that covers a small geographical area, typically within a single building or campus.

• WAN is a network that spans a large geographical area, connecting multiple LANs or remote locations.

• VLAN is a virtual LAN that enables the creation of multiple logical networks...read more

Troubleshooting internet issues involves systematic checks of hardware, configurations, and connectivity.

• Check physical connections: Ensure all cables are securely connected to the router and devices.

• Verify device settings: Confirm that the device is connected to the correct Wi-Fi network or has the right IP configuration.

• Test other devices: Check if the internet works on other devices to determine if the issue is devi...read more

A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on predetermined security rules.

• Firewall acts as a barrier between a trusted internal network and an untrusted external network.

• It examines network packets and filters them based on rules to allow or block traffic.

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

• Examples of firewalls include Cisco ASA, Palo A...read more

VLAN stands for Virtual Local Area Network. It is a logical grouping of devices on a network, allowing for better network management and security.

• VLANs divide a single physical network into multiple virtual networks.

• They help in reducing network congestion and improving network performance.

• VLANs can be configured on switches using commands like 'vlan database', 'vlan ', and 'interface switchport access vlan '.

Access ports are used to connect end devices, while trunk ports are used to carry traffic between switches.

• Access ports are assigned to a single VLAN and carry traffic for that VLAN only.

• Trunk ports can carry traffic for multiple VLANs using VLAN tagging.

• Access ports are typically used for devices like computers, printers, and IP phones.

• Trunk ports are used to interconnect switches or connect to network devices like ro...read more

To check uptime of Routers & Switches, use the show version command.

• Log in to the device using SSH or Telnet.

• Enter the show version command.

• Look for the line that starts with 'uptime'.

• The uptime will be displayed in the format of days, hours, minutes, and seconds.

• Alternatively, you can use network monitoring tools like Nagios, PRTG, or SolarWinds to monitor uptime.

• These tools can provide alerts when a device goes down ...read more