Persistent Systems Technical Support Engineer Interview Questions and Answers

Q1. Sql query , database connectivity,
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Q2. Unix commands , grep, find, sed
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Talk about one of three topics for 2 mins

Q1. What is DHCP and why do we use it what is dns How does DHCP work in a network What is the role of a router What is a gateway How to boot into safemode
Ans. 
DHCP is a network protocol that automatically assigns IP addresses to devices, DNS translates domain names to IP addresses, routers connect networks, gateways connect networks with different protocols, booting into safe mode allows troubleshooting.
• DHCP automatically assigns IP addresses to devices on a network

• DNS translates domain names to IP addresses for easier access

• Routers connect different networks together to ena...read more
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Q2. What is IP address What are the classes of IP What is workgroup and domain What is BSOD What is 32 bit and 64 bit OS SSD vs HDD explain windows boot process System keeps restarting. Steps to resolve how to...read more
Ans. 
IP address is a unique identifier assigned to each device connected to a network. Classes of IP include A, B, C, D, and E. Workgroup and domain are network organization structures. BSOD is Blue Screen of Death.
• IP address is a unique numerical label assigned to each device on a network

• Classes of IP include A, B, C, D, and E with different ranges of addresses

• Workgroup is a peer-to-peer network where each computer has its...read more
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Q1. System bootup issues
Ans. 
System bootup issues can be caused by hardware or software problems.
• Check for loose connections or faulty hardware components

• Verify BIOS settings and ensure correct boot order

• Scan for malware or corrupted system files

• Try booting into safe mode to troubleshoot software conflicts
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Q1. Write a code of hashmaps in Java while screen share
Ans. 
Code example of hashmaps in Java
• Declare a hashmap: HashMap map = new HashMap<>();

• Add key-value pairs: map.put("key1", 1);

• Retrieve value by key: int value = map.get("key1");
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Any topic we can choose and just speak in front of the fellow candidates

Q1. Difference between ram and rom
Ans. 
RAM is volatile memory used for temporary storage, while ROM is non-volatile memory used for permanent storage.
• RAM stands for Random Access Memory, used for temporary storage of data and program instructions

• ROM stands for Read-Only Memory, used for permanent storage of data and program instructions

• RAM is volatile, meaning data is lost when power is turned off

• ROM is non-volatile, meaning data is retained even when power
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Q2. What do you know about cloud computing
Ans. 
Cloud computing is the delivery of computing services over the internet, including storage, servers, databases, networking, software, and analytics.
• Cloud computing allows users to access and use resources on-demand without the need for physical infrastructure.

• It offers scalability, flexibility, cost-effectiveness, and increased efficiency.

• Examples of cloud computing services include Amazon Web Services (AWS), Microsoft
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Q3. What is network
Ans. 
A network is a collection of computers, servers, mainframes, network devices, and other devices connected to one another to share data and resources.
• Networks can be wired or wireless

• They can be local (LAN), wide (WAN), or global (Internet)

• Networks use protocols like TCP/IP to communicate

• Examples include Ethernet, Wi-Fi, and cellular networks
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Q4. What are mentioned in job description and what do you understand about the role mentioned in JD
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Q5. What is IP and how IP address is represented
Ans. 
IP stands for Internet Protocol. An IP address is a unique numerical label assigned to each device connected to a computer network.
• IP stands for Internet Protocol

• IP address is a unique numerical label assigned to devices on a network

• IP addresses are represented in decimal format, such as 192.168.1.1

• There are two versions of IP addresses - IPv4 and IPv6
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