In Windows Photo Gallery, the tags, ratings, and captions are all ________

The Advanced Encryption Standard was published by the __________ in 2001.

A. ARK B. FIPS C. IEEE D. NIST

A __________ consists of a public key, an identifier of the key owner, and the whole block signed by a trusted third party and can be used by participants to exchange keys without contacting a public key authority in a way that is as reliable as if the keys were obtained directly from a public key authority.

Fill in the blank(s) with the appropriate word(s).