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Chapter 5 MC
Chapter 5 MC
This activity contains 10 questions.
A channel partitioning protocol has which of the following characteristics:
there is no master node
all transmitting nodes get the same amount of bandwidth
it does not generate collisions
all of the above
In slotted ALOHA with N active nodes, the probability that no node transmits in a given slot is
1-p
(1-p)
N
(1-p)N
p
N
An ARP query packet is encapsulated in
a link-layer frame addressed to a specific adapter
an IP datagram
a link-layer broadcast frame
none of the above
Ethernet provides which of the following services to the network layer
error detection
reliable data transfer
flow control
all of the above
For Ethernet, if an adapter determines that a frame it has just received is addressed to a different adapter
it discards the frame without sending an error message to the network layer
it sends a NACK (not acknowledged frame) to the sending host
it delivers the frame to the network layer, and lets the network layer decide what to do
it discards the frame and sends an error message to the network layer
In the Ethernet CSMA/CD protocol, suppose a node constructs a frame and then senses the channel as busy. Then
the adapter waits until it senses the channel idle and then begins to transmit the frame.
the adapter begins to transmit the frame.
the adapter enters exponential backoff.
none of the above
In CSMA/CD, after the 3rd collision, what is the probability that the value of K that a node chooses is 2?
0
.33
.25
.125
A 10BaseT Ethernet LAN has
a star topology
a ring topology
a linear topology (i.e., a bus)
none of the above
When a switch transmits an Ethernet frame, the Ethernet frame has
the swtitch's LAN address for its source address
the swtitch's LAN address for its destination address
the broadcast address for the its source address
none of the above
The switch poisoning attack involves:
sending many packets to the switch with different bogus destination MAC addresses
sending many packets to the switch with different bogus destination IP addresses
sending many packets to the switch with different bogus source MAC addresses
sending many packets to the switch with different bogus source IP addresses
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