Question: The ____ and ______ attributes specify the layout of frames within the browser window.

Answer:

The `cols` and `rows` attributes are used to specify the layout of frames within the browser window.

In the context of HTML framesets, the `cols` attribute is used to define the width of individual frames arranged horizontally, while the `rows` attribute is used to define the height of frames arranged vertically.

Here's an example usage of `cols` and `rows` attributes:

```html
<frameset cols="25%, 75%">
<frame src="frame1.html">
<frame src="frame2.html">
</frameset>
```

In the above example, the `cols` attribute divides the width of the frameset into two columns, where the first frame occupies 25% of the width, and the second frame occupies 75% of the width.

Similarly, the `rows` attribute can be used to define the height of frames:

```html
<frameset rows="50%, 50%">
<frame src="frame1.html">
<frame src="frame2.html">
</frameset>
```

In this case, the `rows` attribute divides the height of the frameset into two rows, each occupying 50% of the height.

Note that the use of framesets is considered outdated in modern web development, and alternative approaches like CSS layouts, flexbox, or grid systems are often preferred.

```html
<frameset cols="25%, 75%">
<frame src="frame1.html">
<frame src="frame2.html">
</frameset>
```

```html
<frameset rows="50%, 50%">
<frame src="frame1.html">
<frame src="frame2.html">
</frameset>
```