IT industry career guidance experts teach you VPN Interview Questions in 10 minutes

Question 1 what is VPN?

 

Question 2 what security vulnerabilities are resolved by VPN?

 

Question 3 what is authentication, confidentiality and integrity?

 

Question 4 can you list some of the items in the VPN manifest, decide whether to use it, then select, then deploy, and then maintain the VPN?

 

Question 5 what is symmetric and asymmetric encryption?

Question 6 what is IPSec VPN?

 

Question 7 explain the SSL handshake?

 

Question 8 what is the work layer for IPsec?

 

Question9 What is the unreasonable expectation of VPN?

 

Question 10 lists one of the main shortcomings of IPSec?

 

Question 11 What is the difference between the transmission mode and the tunnel mode?

 

Question 12 what are the three main security services provided by IPSec VPN?

 

Question 13 defines a digital signature?

 

Question 14 what are the reasonable expectations of VPN?

 

Question 15 what is authorization?

Question16 Are there market penetration of these products?

 

Question 17 which firewall problems are related to VPN selection and deployment?

 

Question 18 what performance problems does VPN cause?

 

Question 19 what are the three protocols used in IPSec?

 

Question 20 explain the IPsec protocol header?

 

Question 21 How do ESP & AH provide anti-replay protection?

 

Question 22 what is IKE?

 

Question 23 what resources (people, computing muscles, bandwidth, etc.) are required to deploy, use, and maintain VPN?

 

Question 24 is the IKE protocol valid?

 

Q25 Explain how IKE/ISAKMP works?

 

Question 26 explains message exchange between peers in IKE / ISAKMP?

 

Question 27 what is the relationship between VPN and firewall?

 

Question 28 what is Diffie-Hellman?

 

Question 29 how does Diffie-Hellman work?

 

Question 30 what is a security connection?

Question 31 what is a transformation set?

 

Question 32 What is an encrypted access list?

 

Question 33 Is the application or environment that the 33VPN exists is really harmful?

 

Question 34 what is an encrypted map?

 

Question 35. How do I check the status of the tunnel 1 and 2 periods?

 

Question 36 what is the IPsec virtual tunnel interface?

 

Question 37 is VPN used for a particular kind of application or environment? If so, what are some examples of where and why VPN was deployed?

 

Question 38 What is the difference between the static crypto map and the dynamic crypto map?

 

Question 39 What is a Cisco Easy VPN?

 

Question 40 what is DMVPN?

 

Question 41 what encryption problems are relevant in a VPN environment?

 

Question 42 which security vulnerabilities are unique or enhanced to VPN?

 

Question 43. Explain the next-hop solution protocol (NHRP)?

 

Question 44 what is GRE?

 

Question 45 lists the main shortcomings of GRE and L2TP?

 

Question 46 who is the main participant in the market?

 

Question 47 what is SSL VPN? How is it different from IPsec VPN?

 

Question 48 what layer does SSL VPN run on?

 

Question 49 what are different SSL VPN patterns?

 

Question 50 what are some of the thorny questions for VPN product suppliers?

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