layer establish an end-to-end connection between
the sender and the receiver, keep track of all the
segments that are being transmitted, and have a
retransmission mechanism in place.
2. C. The Internet layer in the TCP/IP reference
model corresponds in functions and
characteristics to the network layer in the OSI
model.
3. B, D. There are a large number of application
layer protocols, including the Hypertext Transfer
Protocol (HTTP), which is used for transferring
web pages between web browsers and web
servers, and File Transfer Protocol (FTP), which
is used for transferring files between a client and
a server.
4. D. The TCP/IP reference model transport layer
PDU is called a segment.
5. D. The Preamble field consists of 8 bytes of
alternating 1s and 0s that are used to synchronize
the signals of the sender and receiver.
6. B. A MAC address has 48 bits organized as 12
hexadecimal numbers.
7. D. If a switch doesn’t have the destination MAC
address of the frame, it floods the frame over all
the ports except the port on which it was
received. As the frame gets flooded throughout
the network, eventually it will get to its
destination.
8. A. The bit pattern for the first byte in a Class C
IPv4 address is 110xxxxx.
9. C. The broadcast address for the network
192.168.0.96/27 is 192.168.0.127.
- A, B, D. An IPv6 address is 128 bits long, with
colons separating entries (x:x:x:x:x:x:x:x, where x
is a 16-bit hexadecimal field). Successive fields of
zero can be represented as :: but only once per
