Pre sales engineer Interview Questions

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UiPath
Pre-Sales Engineer was asked...13 February 2019

Square island with 100 each side which distance to shore is 100 from each square side. Got unlimited number of sticks to build a bridge.

2 Answers

Use the corners and triangles. Only two sticks

It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore. There's a lot of Pre-Sales Engineer experts who've worked at UiPath, who provide this sort of practice through mock interviews. There's a whole list of them curated on Prepfully. prepfully.com/practice-interviews Less

UiPath

Print out the duplicates in an unsorted array. The duplicates can appear multiple times

2 Answers

Use a Hashset

There's a lot of elements to typically cover in these questions, clarifications, scoping, making sure you're answering the actual question the interviewer is looking for you to answer, etc. Could be worth doing a mock interview with one of the Prepfully UiPath Pre-Sales Engineer experts... they've worked in the role so they clearly know how to get through the interview. prepfully.com/practice-interviews Less

Silver Peak Systems

Explain the TCP/IP handshake?

2 Answers

SYN, SYN-ACK, ACK also included the sequence and acknowledgement numbers increment which was not necessary Less

For Data to be sent, Connection must be established using 3way handshake between 2 hosts: 1. Host1: SYN(seq=x) 2. Host2: SYN(seq=y), ACK(seq=x+1) 3. Host1: ACK(seq=y+1) each host starts with sequence number randomly chosen, Ack always indicate expected next seq from other end (i.e seq no +1) Less

Silver Peak Systems

Explain how do VPN's work?

2 Answers

Extending Private Networks privately over internet (public network) , targeting protecting & securing traffic (Authentication: Username and Pass, Integrity: Hashing, Confidentiality: Encryption) it works using tunneling protocols : - IPSec: a framework that provides security on layer three of the OSI model. - PPTP: an old VPN protocol that uses PPP and GRE, insecure and should not be used anymore. - L2TP: a VPN protocol that tunnels layer two traffic, does not offer any encryption so should be used together with IPsec. - SSL VPN/ (TLS): uses SSL (HTTPS) to create a secure connection with the web browser. Less

Each end of the VPN tunnel will encrypt the original IP packet, adds a VPN header, a new IP header and then forwards the encrypted packet to the other end of the tunnel. Less

Huawei Technologies

What do you see yourself in next 5 years ?

2 Answers

Talk about long term goals

Talk about anything that does not pose a threat to the person asking the questions. Huawei is very political and you have to understand the reason behind the question. Less

Silver Peak Systems

What is the difference between OSPF and BGP?

2 Answers

IGP vs EGP but, you will need to go a little deeper

Both are Dynamic Routing Protocols but from different types ( IGP & EGP) OSPF: - IGP (Interior within same AS) - Algorithm used to decide best route; Link state (shortest path first) - AD= 110 - Metric = Cost (Function of Interface BW) BGP: - EGP (Exterior usually between 2 diff AS, yet it has 2 types iBGP within AS/ EBGP between AS) - Algorithm used to decide best route; Path Vector - Metric here is collection of attributes based on which it decide best path (ex; local preference / MED/ weight/ AS-Path ) - AD= 20 (ebgp) / 200(ibgp) Less

Commvault

What completion have you encountered selling back up previsouly !

2 Answers

Veeam, AppAssure, NetBack up. All the major players.

The key in these questions is to cover the fundamentals, and be ready for the back-and-forth with the interviewer. Might be worth doing a mock interview with one of the Commvault or ex-Commvault Pre-Sales Systems Engineer experts on Prepfully? They give real-world practice and guidance, which is pretty helpful. prepfully.com/practice-interviews Less

Spirit Communications

Do you think you have the technical skills for the job?

2 Answers

Yes, and mentioned certifications.

Skills or no, a response of some sort would be expected...

Nutanix

Several probing questions depending on whom I met with in regards to my background in other roles, technical acumen, business acumen, etc.

2 Answers

Per my knowledge, experience and background over my past twenty years.

There's a lot of elements to typically cover in these questions, clarifications, scoping, making sure you're answering the actual question the interviewer is looking for you to answer, etc. Could be worth doing a mock interview with one of the Prepfully Nutanix Pre-Sales Systems Engineer experts... they've worked in the role so they clearly know how to get through the interview. prepfully.com/practice-interviews Less

Confluent

How would you highlight benefits of Confluent enterprise platform for Apache Kafka users

2 Answers

Research their website and web for reviews of actual users

It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore. There's a lot of Pre-Sales Engineer experts who've worked at Confluent, who provide this sort of practice through mock interviews. There's a whole list of them curated on Prepfully. prepfully.com/practice-interviews Less

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