What is not a variable that an network access control list can filter traffic with?
a.
the operating system used by the source or destination device.
b.
the transport layer protocol used for the packet.
c.
the network layer protocol used for the packet.
d.
the source or destination tcp/udp port number in the packet.

solution:

bookmark is a word, symbol, image, or other object that links you to another element in another location.

bookmark is a saved shortcut that directs your browser to a specific webpage. it stores the title, url, and favicon of the corresponding page. saving bookmarks allows you to easily access your favorite locations on the web.

it works in all modern web browsers include bookmark features. bookmarks are called favorites or internet shortcuts in internet explorer, and by virtue of that browser's large market share, these terms have been synonymous with bookmark since the first browser war.