What is the main purpose of encryption in secure network communication?

To convert plaintext data into ciphertext to prevent unauthorized reading

To compress data so it takes up less bandwidth

To route data through a different network path

To authenticate the sender of the data

A company operates a public API that is accessed by external partners. They want to protect the API from DDoS attacks, cache responses to reduce load, and hide the backend server architecture. They also need to terminate TLS at the edge. Which solution is the best fit?

Forward proxy with SSL inspection

Reverse proxy with TLS termination and caching

What is a distinguishing characteristic of an open proxy?

It requires authentication before allowing any client to use it

It is publicly accessible and can be used by any client on the internet

It is designed to protect a web server from external attacks

It is configured to only allow requests from a specific internal network

A network team is troubleshooting a site-to-site IPsec VPN that is dropping connections intermittently. They suspect that the issue is related to the VPN gateway's NAT traversal (NAT-T) settings. What is the most likely reason for the drops?

The encryption algorithm is too strong

The VPN is using TCP instead of UDP

NAT-T is disabled, causing IPsec packets to be dropped by the NAT device

EC-CouncilNetwork Defense Essentials

Domain 3Objective 4

Proxy Servers, VPNs, and Secure Network Communication NDE Practice Questions (Page 3)

Part of the Technical Security Controls domain, which makes up ~16% of our current practice bank.

53questions here

11free pages

12concepts

12 Concepts in This Objective

Proxy Server Fundamentals
Proxy Server Types
Proxy Server Functions
Proxy Server Security Implications
VPN Fundamentals
VPN Protocols
VPN Types
VPN Security Considerations
Secure Network Communication Principles
Encryption and Tunneling
Integration of Proxies and VPNs
Best Practices for Secure Communication

Questions 11–15

11expert · hard
A security architect is choosing a VPN protocol for a remote-access solution. The requirement is that the VPN must work through restrictive firewalls that only allow outbound HTTPS, and it must support multi-factor authentication. Which protocol is the best fit?
Select an answer first
12foundation · easy
What is the main purpose of encryption in secure network communication?
Select an answer first
13expert · hard
A company operates a public API that is accessed by external partners. They want to protect the API from DDoS attacks, cache responses to reduce load, and hide the backend server architecture. They also need to terminate TLS at the edge. Which solution is the best fit?
Select an answer first
14foundation · easy
What is a distinguishing characteristic of an open proxy?
Select an answer first
15expert · hard
A network team is troubleshooting a site-to-site IPsec VPN that is dropping connections intermittently. They suspect that the issue is related to the VPN gateway's NAT traversal (NAT-T) settings. What is the most likely reason for the drops?
Select an answer first

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