CWA Web Analytics Tools & Data Collection 2

Question 1

What is the primary benefit of using a tag management system (TMS) such as Google Tag Manager?

Accepted Answer

Marketers can deploy and update tags without changing site code for each release

Answer

A TMS centralizes tag deployment so tags can be added or changed in a container without a developer code release.

Question 2

What is a data layer in the context of tag management?

Accepted Answer

A structured JavaScript object that holds page and user data for tags to read

Answer

The data layer is a JavaScript object that passes structured information from the page to the TMS in a consistent way.

Question 3

How does a tracking pixel (beacon) typically send data to an analytics server?

Accepted Answer

By requesting a tiny image or endpoint with data encoded in the request parameters

Answer

A beacon is an HTTP request, often for a 1x1 image or collect endpoint, carrying hit data in its query string or body.

Question 4

Which advantage does server-side tagging provide compared with purely client-side tagging?

Accepted Answer

It reduces third-party scripts in the browser and gives more control over data sent to vendors

Answer

Server-side tagging moves vendor calls to a server container, reducing page weight and letting you filter or enrich data before forwarding it.

Question 5

What is the default lifetime of the GA4 _ga cookie?

Accepted Answer

2 years

Answer

The _ga cookie that identifies a browser has a default expiration of two years, subject to browser restrictions.

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