1K0-002 · Question #231
Which of the following are examples of Wide Area Networks with capabilities greater than one Million bits per second throughput? (Select two of the following options.)
The correct answer is D. T1/E1 line E. Broadband. See the full explanation below for the reasoning.
Question
Which of the following are examples of Wide Area Networks with capabilities greater than one Million bits per second throughput? (Select two of the following options.)
Options
- AAnalog Telephone Line Service
- BDigital Microphone Interfaces
- CDigital Camera Interface
- DT1/E1 line
- EBroadband
How the community answered
(65 responses)- A6% (4)
- B3% (2)
- C14% (9)
- D77% (50)
Community Discussion
6
Orla P.May 6, 2026The correct answers are D and E. A T1 line runs at 1.544 Mbps and an E1 at 2.048 Mbps, both of which clear that one million bits per second threshold and both are classic WAN technologies designed to carry traffic across geographic distances between sites or into carrier networks. Broadband covers a wide range of WAN-capable services including DSL, cable, and fiber, all of which routinely deliver speeds well above 1 Mbps over public infrastructure. The other three options are not WAN technologies at all, analog telephone lines top out around 56 Kbps which is far below the threshold, and digital microphone and camera interfaces are local peripheral connections with no role in wide area networking.
Mei-Ling H.Jun 1, 2026The word "greater than" is doing a lot of work here because a T1 line runs at exactly 1.544 Mbps and an E1 at 2.048 Mbps, both clearing that one-million-bits threshold, while broadband by definition starts where narrowband ends and goes well above it. Can someone explain why analog telephone lines are disqualified even though DSL runs over the same copper, or is the question specifically about the base POTS service without any digital overlay?
Orla P.Jun 4, 2026DSL disqualifies the plain POTS line because DSL adds a digital layer that splits the copper into frequency bands, whereas the raw analog line tops out around 56 Kbps even at its absolute best, which puts it firmly in narrowband territory and nowhere near that one-million-bits threshold the question is drawing from.
Lena V.Jun 5, 2026T1/E1 and Broadband, saw this exact wording, skipped A immediately.
Ola B.May 18, 2026Saw this exact one, spun up a lab with a T1 emulator and it clicked instantly, D and E all day.
Orla P.May 20, 2026The emulator is great for building muscle memory on the config side, just make sure you are also reading the actual RFC for any protocol behavior questions, because the simulator does not always reproduce every edge case the exam throws at you.