N10-005 · Question #464
Which of the following is used to ensure traffic flows efficiently on multiple T-1 circuits?
The correct answer is D. Load balancer. A load balancer distributes traffic across multiple T-1 circuits to optimize throughput and prevent any single circuit from being saturated. DNS, content filters, and proxy servers do not distribute circuit-level traffic.
Question
Which of the following is used to ensure traffic flows efficiently on multiple T-1 circuits?
Options
- ADNS server
- BContent filter
- CProxy server
- DLoad balancer
How the community answered
(43 responses)- A2% (1)
- C5% (2)
- D93% (40)
Why each option
A load balancer distributes traffic across multiple T-1 circuits to optimize throughput and prevent any single circuit from being saturated. DNS, content filters, and proxy servers do not distribute circuit-level traffic.
A DNS server resolves hostnames to IP addresses and has no ability to distribute or balance traffic across multiple WAN circuits.
A content filter inspects and blocks traffic based on content policies and does not influence how traffic is distributed across multiple circuits.
A proxy server acts as an intermediary for client requests, typically for web traffic, and does not distribute traffic across multiple T-1 links.
A load balancer operates at the network level to distribute outbound and inbound traffic across multiple T-1 circuits simultaneously, maximizing aggregate bandwidth utilization and providing redundancy if one circuit fails. This is its core function in a WAN context with multiple equal-cost links.
Concept tested: Load balancing across multiple WAN circuits
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