Singtel Cyber Security Engineer Interview Questions and Answers

Q1. Preferred location
Ans. 
I am open to any location that offers growth opportunities and a challenging work environment.
• Open to relocation for the right opportunity

• Prefer locations with strong networking infrastructure

• Interested in locations with tech hubs or opportunities for professional development
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Q2. What' isbm your CCTC?
Ans. 
My current CCTC is $80,000 per year.
• Current CCTC is $80,000 per year

• CCTC may include salary, bonuses, benefits, etc.

• Negotiable based on experience and qualifications
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Q1. Full form of BGP
Ans. 
Border Gateway Protocol
• BGP stands for Border Gateway Protocol

• It is a standardized exterior gateway protocol used to exchange routing information between different autonomous systems on the internet

• BGP helps in determining the best path for data to travel between networks

• It is commonly used by Internet Service Providers (ISPs) and large organizations to connect to multiple networks

• BGP operates on TCP port 179
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Q2. Router function
Ans. 
Routers are networking devices that forward data packets between computer networks.
• Routers operate at the network layer of the OSI model

• They use routing tables to determine the best path for data packets

• Routers can connect different types of networks, such as LANs and WANs
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Q1. What is Joining date
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Q2. What is your ECTC
Ans. 
Expected CTC (Cost to Company) for the position
• ECTC stands for Expected Cost to Company

• It includes salary, bonuses, benefits, and any other compensation offered by the employer

• Candidates should provide their expected salary range based on their experience and skills
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Basic questions related to speed, time, efficiency

Q1. Why do we need 5ghz when we already had 2.4 GHz
Ans. 
5GHz offers faster speeds, less interference, and more channels compared to 2.4GHz.
• 5GHz provides faster data transfer speeds compared to 2.4GHz, making it ideal for high-bandwidth activities like streaming HD video or online gaming.

• 5GHz has less interference from other devices like microwaves and cordless phones that operate on the 2.4GHz frequency.

• 5GHz offers more available channels, reducing the likelihood of congest...read more
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Q2. Can you convert switch into router
Ans. 
Yes, a switch can be converted into a router by enabling routing features and configuring routing protocols.
• Enable routing features on the switch

• Configure routing protocols such as OSPF or EIGRP

• Assign IP addresses to interfaces

• Implement access control lists for security

• Install a routing software image if necessary
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Q1. What is IPRAN solution
Ans. 
IPRAN solution stands for Internet Protocol Radio Access Network, which is a network architecture that combines IP/MPLS and mobile technologies.
• IPRAN solution is used to provide high-speed internet access to mobile users.

• It helps in optimizing network resources and improving network performance.

• Examples of IPRAN solution providers include Cisco, Huawei, and Juniper Networks.
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Q2. What is the different types of L2VPN we have
Ans. 
Different types of L2VPN include Ethernet VPN (EVPN), Virtual Private LAN Service (VPLS), and Layer 2 Tunneling Protocol (L2TP).
• Ethernet VPN (EVPN) - Uses BGP as the control plane protocol for distributing MAC addresses across the network.

• Virtual Private LAN Service (VPLS) - Extends a LAN over the network, allowing multiple sites to appear as if they are on the same LAN segment.

• Layer 2 Tunneling Protocol (L2TP) - Creat...read more
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Q1. Volte call flow
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Q1. -tell us about yourself
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Q2. -what experience do u have as a network engineer
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Q3. What do you know about Huawei
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Q4. What is MPLS protocol and in what situations do we use it
Ans. 
MPLS (Multiprotocol Label Switching) is a protocol used in high-performance telecommunications networks to direct data packets along predefined paths.
• MPLS is used to improve network performance by efficiently routing data packets based on labels instead of IP addresses.

• It is commonly used in scenarios where quality of service (QoS) and traffic engineering are important, such as in large enterprise networks or service p...read more
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Q5. Explain the three different INTER_AS solutions their advantages and disadvantages
Ans. 
Three different INTER_AS solutions and their advantages and disadvantages
• Option 1: Option A - Advantages: Scalability, Disadvantages: Complexity

• Option 2: Option B - Advantages: Simplicity, Disadvantages: Limited scalability

• Option 3: Option C - Advantages: Flexibility, Disadvantages: Potential security risks
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It contains logical reasoning, quantitative aptitude, and technical questions

Q1. Technical questions based on networks
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Q1. Questions were based on wireless Communication
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The discussion is about the benefits and drawbacks of artificial intelligence and UPI payments.

Q1. They have asked Self introduction.
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Q2. The project's that I have worked on my final sem.
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Q3. The role and responsibilities that I have done in my previous internship.
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Q4. What are your strengths and weaknesses?
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Q5. What kind of compensation are you looking for?
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Q6. Where do you see yourself in five years?
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Q1. BGP Port number BGP states STP Nexus code upgrades VPC VDC
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Q1. Network flow in nexus switches vpc communication in nexus switches unable to ssh nexus
Ans. 
Network flow in Nexus switches involves understanding vPC communication and troubleshooting SSH connectivity issues.
• Network flow in Nexus switches involves the movement of data packets between devices connected to the switches.

• vPC (Virtual Port Channel) communication in Nexus switches allows for link aggregation and redundancy by combining multiple physical links into a single logical link.

• Troubleshooting SSH connectiv...read more
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