When you drag a layer up or down to reposition it in the hierarchy, a thick horizontal line identifies where the layer will be repositioned.

?____ ciphers use a key stream to encrypt and decrypt a plaintext message.

A. ?Block B. ?Bit C. ?Packet D. ?Stream

The ability to change the mouse pointer is one of the added features in CSS2, which builds on CSS1.

Answer the following statement true (T) or false (F)