NE NE WAN Technologies 1

Question 1

Which WAN technology uses labels rather than IP addresses to forward packets, improving speed and enabling traffic engineering?

Accepted Answer

MPLS

Answer

MPLS uses short fixed-length labels attached to packets to make forwarding decisions at high speed along Label Switched Paths (LSPs).

Question 2

What is a site-to-site VPN primarily used for in WAN connectivity?

Accepted Answer

Connecting two geographically separate networks over a public internet connection with encryption

Answer

Site-to-site VPNs create encrypted tunnels between gateway devices at two sites, allowing branch and headquarters to communicate securely over the internet.

Question 3

What is the primary advantage of SD-WAN over traditional WAN technologies?

Accepted Answer

It provides centralized management and dynamic path selection across multiple WAN links

Answer

SD-WAN decouples network control from hardware, enabling centralized policy management and intelligent traffic routing across broadband, MPLS, and LTE links.

Question 4

Which WAN circuit type provides a dedicated point-to-point connection with guaranteed bandwidth between two locations?

Accepted Answer

Leased line (T1/E1)

Answer

Leased lines like T1 (1.544 Mbps) or E1 (2.048 Mbps) are dedicated circuits providing constant guaranteed bandwidth and low latency for enterprise WAN links.

Question 5

What is the purpose of QoS (Quality of Service) in WAN environments?

Accepted Answer

To prioritize critical traffic like voice and video over less time-sensitive data

Answer

QoS classifies and prioritizes network traffic, ensuring latency-sensitive applications like VoIP and video conferencing receive guaranteed bandwidth and low delay.

NE - Network Engineer Practice Test

NE - Network Engineer Practice Test

NE NE WAN Technologies 1