iBCScorp Interview Questions and Answers

Straight through cables are used to connect different types of devices, while crossover cables are used to connect similar devices.

• Straight through cables have the same wiring at both ends, while crossover cables have the wiring reversed at one end.

• Straight through cables are commonly used to connect a computer to a switch or router, while crossover cables are used to connect two computers or two switches directly.

• Examples of straight through cables include connecting a compu...read more

Trunk ports carry traffic for multiple VLANs, while access ports carry traffic for a single VLAN.

• Trunk ports are used to interconnect switches and carry traffic for multiple VLANs

• Access ports are used to connect end devices and carry traffic for a single VLAN

• Trunk ports use tagging to differentiate between VLANs

• Access ports do not use tagging and assign all incoming traffic to a specific VLAN

Port numbers for FTP, HTTP, DNS, DHCP

• FTP uses port 21 for control and port 20 for data transfer

• HTTP uses port 80 for communication

• DNS uses port 53 for domain name resolution

• DHCP uses port 67 for server and port 68 for client communication

A VLAN (Virtual Local Area Network) is a logical grouping of devices on a network that communicate as if they are on the same physical network.

• VLANs help improve network security by isolating traffic between different groups of devices.

• They can be used to segment network traffic for different departments, applications, or security levels.

• VLANs are configured at the switch level and allow for more efficient use of network resources.

• For example, a company may have separate VLAN...read more

SNMP stands for Simple Network Management Protocol, used for monitoring and managing network devices.

• SNMP is a protocol used to manage and monitor network devices

• It allows network administrators to collect information from network devices like routers, switches, servers, etc.

• SNMP operates on the application layer of the OSI model

• It uses a manager-agent model where the manager collects data from agents on network devices

• SNMP uses MIB (Management Information Base) to define the...read more