Server‑side testing assigns and renders experiences on the server, avoiding client flicker and enabling deeper logic. Client‑side testing modifies the page in the browser for rapid UI iteration.
A key advantage of server‑side testing for performance is that it avoids visible ______ during page load.
flicker (FOOC)
PNG dithering
font ligatures
CSS variables
Client‑side testing is often preferred when you want to rapidly iterate on ______ without redeploying back‑end code.
UI and copy
TCP congestion control
kernel modules
database sharding
For pricing logic or checkout rules, ______ testing is generally safer and harder to spoof.
server‑side
client‑side only
image‑based
pure CSS
Sticky assignment should be at the ______ level to prevent cross‑session contamination.
pageview
tab
image
user
Client‑side randomization can be biased if ad‑blockers or bots ______ event beacons.
vectorize
recolor
upsample
suppress
Server‑side delivery can simplify ______ compliance by reducing client identifiers and third‑party scripts.
privacy and consent
SVG stroke order
font hinting
image gamma
On SPA frameworks, client tests risk mismatches during ______ and re‑render.
DNS TTL
hydration
GIF encoding
CMYK conversion
A practical rollout pattern is a staged ramp such as 1%→5%→25%→50%→100% with a fast ______ if metrics regress.
font fallback
pixel swap
gzip boost
rollback
Mutual exclusivity between overlapping tests helps prevent ______ when both target the same users.
color banding
interaction or contamination
SVG inflation
cache warming
For analytics parity, pass experiment ID and variant as ______ alongside primary KPIs.
CSS classes only
event parameters
URL fragments only
PNG metadata
Starter
You’re new to server‑side vs. client‑side testing. Review definitions, guardrails, and simple examples to build confidence.
Solid
Good grasp of server‑side vs. client‑side testing. Tighten design choices and deepen your analysis habits.
Expert!
Excellent command of server‑side vs. client‑side testing. You’re ready to operate at scale and mentor others.
