American Broadcasting Company L2 Network Engineer Interview Questions and Answers

Routing involves forwarding data packets between networks, while switching involves forwarding data packets within a network.

• Routing is the process of determining the best path for data packets to travel from source to destination across different networks.

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

• OSPF (Open Shortest Path First) is a routing protocol used to find the be...read more

DHCP is a network protocol that assigns IP addresses to devices on a network, while DNS translates domain names to IP addresses.

• DHCP stands for Dynamic Host Configuration Protocol

• DHCP assigns IP addresses to devices on a network dynamically

• DNS stands for Domain Name System

• DNS translates domain names to IP addresses

• DHCP helps in automatic IP address configuration

• DNS helps in resolving domain names to IP addresses

VLANs (Virtual Local Area Networks) are used to segment a single physical network into multiple virtual networks.

• VLANs help improve network security by isolating traffic within specific groups.

• They can also improve network performance by reducing broadcast traffic.

• VLANs are configured at the switch level and allow devices in different VLANs to communicate as if they were on separate physical networks.

• Each VLAN has its ...read more

Subnet mask is a 32-bit number used to divide an IP address into network and host portions.

• Subnet mask determines which part of an IP address is the network portion and which part is the host portion.

• It is represented in decimal format (e.g. 255.255.255.0) or CIDR notation (e.g. /24).

• Common subnet masks include 255.0.0.0, 255.255.0.0, and 255.255.255.0.

STP is a network protocol that prevents loops in Ethernet networks. VLANs divide a network into separate broadcast domains. DHCP assigns IP addresses, DNS resolves domain names. OSI model defines networking functions in layers.

• STP (Spanning Tree Protocol) prevents loops by blocking redundant paths in a network.

• VLAN (Virtual Local Area Network) divides a network into separate broadcast domains to improve network perform...read more