Question 1
Question
Bridges segregate LANs into broadcast domains.
Question 2
Question
Choose the correct sequence for the TCP 3 way hand shake
Answer
-
SYN, SYN/ACK, ACK
-
ACK , SYN/ACK SYN
-
SYN/ACK, ACK, SYN
-
SYN/ACK, SYN, ACK
Question 3
Question
Switches make forwarding decisions based on the
Answer
-
destination mac address
-
source mac address
-
ip address
-
default gateway
Question 4
Question
All of the following are fields in a TCP header except ________.
Answer
-
FCS
-
offset
-
destination
-
window
Question 5
Question
If a switch receives a frame with an unknown destination address, the frame is _________.
Answer
-
flooded
-
broadcast
-
multicast
-
unicast
Question 6
Question
________, __________, and ____________ are needed to construct a socket.
Answer
-
an IP address
-
a transport protocol
-
a port number
-
ethertype
Question 7
Question
A switch populates its MAC address table with addresses from the destination field of received Ethernet frames.
Question 8
Question
Choose the correct description for the function below.
Multiplexing using ports
Answer
-
Function that allows receiving hosts to choose the correct application for which the data is destined, based on the port number.
-
Process of numbering and acknowledging data with Sequence and Acknowledgment header fields.
-
Process that uses window sizes to protect buffer space and routing devices from being overloaded with traffic.
-
Process used to initialize port numbers and Sequence and Acknowledgment fields
-
Continuous stream of bytes from an upper-layer process that is “segmented” for transmission and delivered to upper-layer processes at the receiving device, with the bytes in the same order.
Question 9
Question
In order to make accurate forwarding decision, a switch needs __________
Question 10
Question
Choose the correct description for the function below.
Error recovery (reliability)
Answer
-
Function that allows receiving hosts to choose the correct application for which the data is destined, based on the port number.
-
Process of numbering and acknowledging data with Sequence and Acknowledgment header fields.
-
Process that uses window sizes to protect buffer space and routing devices from being overloaded with traffic.
-
Process used to initialize port numbers and Sequence and Acknowledgment fields
-
Continuous stream of bytes from an upper-layer process that is “segmented” for transmission and delivered to upper-layer processes at the receiving device, with the bytes in the same order.
Question 11
Question
With an empty MAC address table, a switch acts like a _______.
Question 12
Question
Choose the correct description for the function below.
Flow control using windowing
Answer
-
Function that allows receiving hosts to choose the correct application for which the data is destined, based on the port number.
-
Process of numbering and acknowledging data with Sequence and Acknowledgment header fields.
-
Process that uses window sizes to protect buffer space and routing devices from being overloaded with traffic.
-
Process used to initialize port numbers and Sequence and Acknowledgment fields
-
Continuous stream of bytes from an upper-layer process that is “segmented” for transmission and delivered to upper-layer processes at the receiving device, with the bytes in the same order.
Question 13
Question
Without _____, flooded frames would loop indefinitely.
Question 14
Question
Choose the correct description for the function below.
Ordered data transfer and data segmentation
Answer
-
Function that allows receiving hosts to choose the correct
application for which the data is destined, based on the
port number.
-
Process of numbering and acknowledging data with
Sequence and Acknowledgment header fields.
-
Process that uses window sizes to protect buffer space
and routing devices from being overloaded with traffic.
-
Process used to initialize port numbers and Sequence and
Acknowledgment fields
-
Continuous stream of bytes from an upper-layer process
that is “segmented” for transmission and delivered to
upper-layer processes at the receiving device, with the
bytes in the same order.
Question 15
Question
With store and forward processing the entire ________ must be received before it is processed by the switch.
Answer
-
frame
-
packet
-
segment
-
bit stream
Question 16
Question
With store and forward processing the entire ________ must be received before it is processed by the switch.
Answer
-
TCP segment
-
UDP segment
-
TCP Packet
-
UDP packet
Question 17
Question
Fragment free processing waits to receive the first ___ bytes of a frame before it makes it's forwarding decision
Question 18
Question
Port numbers are a vital part of the socket concept.
Question 19
Question
Fragment free processing is the most desirable decision logic because it allows for error free transmission along with minimal latency.
Question 20
Question
Fragment free processing is the most desirable decision logic because it allows for error free transmission along with minimal latency.
Question 21
Question
When creating a modern LAN, you use _______ and __________
Answer
-
Switches
-
Routers
-
bridges
-
hubs
Question 22
Question
A protocol that requires an exchange of messages before data transfer begins, or that has a required preestablished correlation between two endpoints.
Question 23
Question
________ and ________ segregate LANs into collision domains.
Answer
-
switches
-
routers
-
hubs
-
bridges
Question 24
Question
A protocol that does not require an exchange of messages and that does not require a preestablished correlation between two endpoints.
Question 25
Question
An Ethernet collision domain is comprised of the set of devices that receive a frame when broadcast by another device.
Question 26
Question
The UDP header is the same length as the TCP header
Question 27
Question
VoIP requires low delay, but can tolerate more jitter than web browsing
Question 28
Question
___________ defines the quality of the data transfer between two applications and in the network as a whole.
Answer
-
QoS
-
bandwidth
-
delay
-
jitter
-
loss
Question 29
Question
When a host receives a ________ frame, it must process the received frame.
Answer
-
broadcast
-
unicast
-
multicast
-
experimental
Question 30
Question
A LAN consists of all devices in the same _________.
Answer
-
broadcast-domain
-
collision-domain
-
sub-domain
-
active directory