CPE 400 Midterm Questions with complete solutions 2023/2024
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Course
CPE 400
Institution
CPE 400
CPE 400 Midterm Questions with complete solutions 2023/2024
Transport layer decapsulates data from... - ANSWER-network layer
User datagram protocol is called connectionless because... - ANSWER-all UDP packets are treated independently by the transport layer
The time requires to examine the...
CPE 400 Midterm Questions with
complete solutions 2023/2024
Transport layer decapsulates data from... - ANSWER-network layer
User datagram protocol is called connectionless because... - ANSWER-all UDP packets are treated
independently by the transport layer
The time requires to examine the packet's header and determine where to direct the packet is part of... -
ANSWER-Nodal Processing Delay
What is the data link layer? - ANSWER-The layer, at each node, gets a datagram from the network layer,
which delivers the datagram to the next node along the route. At this next node,
this layer passes the datagram up to the network layer.
What is the application layer? - ANSWER-Through this layer, Applications from one end system go to
another application in another end system
What is routing? - ANSWER-the process of moving packets across a network from one host to a another.
Usually done through routers.
What is error-control? - ANSWER-the process of detecting and correcting both the bit level and packet
level errors.
What is the physical layer? - ANSWER-Layer that moves the individual
bits within the frame from one node to the next.
What is Transmission delay? - ANSWER-amount of time required to push all the packet's bits into the
wire. In other words, this is the delay caused by the data-rate of the link.
, What is queuing delay? - ANSWER-sum of the delays encountered by a packet between the time of
insertion into the network and the time of delivery to the address
If a packet size is 2500 bits and the rate at which a router can pump out packets is 5 Mega bits per
second, then the transmission delay in milliseconds is... - ANSWER-500 microseconds
The formula for Transmission Delay is... - ANSWER-(packet size or length) / (link speed/rate/bandwidth)
What is the queueing delay if the processing speed is greater than the rate of arrival? - ANSWER-0
"A single router is transmitting packets, each of length L bits, over a single link with transmission rate R
Mbps to another router at the other end of the link. Suppose that the packet length is L= 12000 bits, and
that the link transmission rate along the link to router on the right is R = 1000 Mbps. What is the
maximum number of packets per second that can be transmitted by the link (use a whole number)?" -
ANSWER-83333 packets
The time taken to push all bits of a packet onto a transmission link is known as... - ANSWER-the
transmission rate
The two fundamental approaches to moving data through a network of links and switches are... -
ANSWER-packet and circuit switching
What is the formula for the maximum number of packets per second? - ANSWER-Bandwidth/Packet
length
How many bits is 1 Mbps? - ANSWER-1000000 or 10^6 bits
What are the 5 components of reliable data transfer protocol? - ANSWER-Timer, pipelining, Checksum,
Sequence Number, acknowledgement
TCP assigns a sequence number to each segment that is being sent. The sequence number is in the
BLANK byte carried in the segment. - ANSWER-First
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