Telesonic Networks Fiber Optics Engineer Interview Questions and Answers

Basic addition and subtraction

Q1. Tell me about yourself.
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Technically

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Q2. As a fresher, why you want to join our organisation
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Q1. What are your pros and cons
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Q1. Tell me about yourself?
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Q2. What is your ambition?
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Q1. What is difference between straight through and cross over cabling
Ans. 
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.

• Exam...read more
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Q2. Port number of FTP, HTTP, DNS, DHCP
Ans. 
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
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Q3. Name some Firewalls in market
Ans. 
Some popular firewalls in the market include Cisco ASA, Palo Alto Networks, Fortinet FortiGate, and Check Point.
• Cisco ASA

• Palo Alto Networks

• Fortinet FortiGate

• Check Point
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Q4. What are trunck and access ports
Ans. 
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
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Q5. What is a VLAN
Ans. 
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 netwo...read more
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Q6. What is SNMP
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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 device...read more
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