WAN Technologies and Protocols

Correct Answer: Leased line

The best solution for such a requirement is a 'Leased line'. A leased line provides a dedicated, high-speed, and secure connection, which tops the priority list of the organization which is trying to connect its headquarters to a remote office located in a different country. Leased lines are a viable choice for organizations in need of reliability, high-speed, and full-duplex communication. The other options like DSL, Cable Internet, and Satellite are not suitable for this scenario. DSL and Cable Internet are not dedicated connections and their speed can vary based on the number of users. Satellite connections can be affected by weather conditions, are usually slower, and might not provide the level of security required by an organization.

Correct Answer: Increased data transfer efficiency

The most likely reason why the data center recommends enabling jumbo frames is to 'Increase data transfer efficiency'. Jumbo frames are larger than standard ethernet frames and allow more data to be transferred at once, decreasing the CPU load and increasing the throughput. This can significantly speed up file transfers and improve the overall network performance. The answer choice 'Decreased signal latency' is incorrect because enabling jumbo frames won't necessarily decrease latency. Instead, latency is more dependent on factors like network congestion and the physical distance between devices The option 'Reduced need for encryption' is also wrong because enabling jumbo frames has nothing to do with encryption. Network security, in terms of encryption, is determined by other factors and protocols Lastly, 'Strengthened security measures' is not a viable answer. While jumbo frames can improve performance, they do not inherently provide any additional security measures.

Correct Answer: VPN

VPN, or Virtual Private Network, is the most appropriate technology for a company to set up a remote office that will communicate with the head office across the internet without investing in dedicated lines. VPNs allow for secure communication over the internet by creating an encrypted 'tunnel' through which the data can pass, keeping it secure from interception. POTS, or Plain Old Telephone Service, and ISDN, or Integrated Services Digital Network, are outdated technologies predominantly used for voice communication and would not provide the necessary bandwidth for a company's remote office needs. Leased lines would involve investing in dedicated lines which the company is seeking to avoid.