Which layer of the OSI model can provide a
connection-oriented, reliable data transfer between two
hosts?
Application
Presentation
Session
Transport
2
Which protocol is used to transfer files
from computer to computer but is considered
connectionless?
FTP
TFTP
SNMP
TCP
DHCP
3
Which application layer protocol allows
network devices to exchange management
information?
SMTP
SNMP
FTP
TFTP
EIGRP
4
What three pieces of information does the
transport layer use to manage the communication of
separate data streams between hosts? (Choose
three.)
port numbers
checksum values
authentication
keys
sequence numbers
encryption algorithms
acknowledgment
numbers
5
When the receiving workstation detects an
error in the data it has received, it does not
acknowledge receipt of the data. The source workstation
retransmits the unacknowledged data. Which layer of the
OSI model supports this process of
retransmission?
network
application
session
transport
6
Which protocol is used by e-mail servers
to communicate with each other?
FTP
HTTP
TFTP
SMTP
POP
SNMP
7
What does the http portion of the
URL http://www.cisco.com/edu/ communicate to a web
browser?
The web browser needs
to locate the www server.
The address is located
on a site whose name is http.
The web browser is
notified as to which protocol to use.
The http portion
represents the type of web browser that needs to be
used.
8
FTP provides a reliable,
connection-oriented service for transferring of files.
Which transport layer protocol is used for data transfer
when this service is being used?
TFTP
TCP
DNS
IP
UDP
9
What is the purpose of TCP/UDP port
numbers?
indicate the beginning
of a three-way handshake
reassemble the segments
into the correct order
identify the number of
data packets that may be sent without
acknowledgment
track different
conversations crossing the network at the same
time
10
What are the features of the User Datagram
Protocol (UDP). (Choose three.)
no guaranteed delivery
of datagrams
connection-oriented
provides reliable
full-duplex data transmission
reliability provided by
the application layer
connectionless
utilizes sliding
windowing techniques
11
Which of the following are primary duties
of the OSI transport layer? (Choose two.)
path
determination
end-to-end
connectivity
flow control
security control
data
representation
encryption of
data
12
If an application uses a protocol that
exchanges data without using windowing or flow control
and must rely on higher layer protocols for reliability,
which protocol and transfer methods are being
used?
UDP,
connection-oriented
UDP,
connectionless
TCP,
connection-oriented
TCP,
connectionless
13
TCP is referred to as connection-oriented.
What does this mean?
TCP uses only LAN
connections.
TCP requires devices to
be directly connected.
TCP negotiates a
session for data transfer between hosts.
TCP reassembles the
data steams in the order that it is
received.
14
Which port numbers are commonly assigned
for FTP use? (Choose two.)
19
20
21
22
15
Which Application layer protocol is widely
used to support resolving host names to IP
addresses?