The interface between the application process and the transport-layer is

a message.

an IP address.

its location.

a socket.

TCP and UDP both provide throughput and timing guarantees.

True

False

The Web's application-layer protocol is

DNS

HTTP

SNMP

SSH

Since an HTTP server is stateless, which of the following allows a Web site to identify users?

cookies

DNS

hostname

ICMP

__________ is the principal application-layer protocol for Internet electronic mail.

ICMP

IMAP

NNTP

SMTP

Which of the following is not a mail access protocol?

HTTP

IMAP

POP3

SMTP

All DNS query and reply messages are sent

within TCP datagrams.

within UDP datagrams.

encrypted.

to port 22.

The most popular P2P file distribution protocol at the time of publication of the text is BitTorrent.

True

False