Systems Architecture
7th Edition
ISBN: 9781305080195
Author: Stephen D. Burd
Publisher: Cengage Learning
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Chapter 9, Problem 5VE
Program Description Answer
The OSI Network layer forwards messages to their correct destinations.
Hence, the correct answer is “Network layer”.
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Students have asked these similar questions
Contention-based access protocols _____.
a.are nondeterministic
b.scale very well under heavy media use
c.have more overheads than controlled-access protocols
d.have mechanisms to track the turns to access the media
Physical Layer Provides access for
*.the end user
True O
False O
the network layer provides two
related services: Addressing and
*routing
True O
False O
The number of users on a network
has the greatest impact on the
*network's reliability
True O
False O
The physical layer is responsible for
moving frames from one hop (node)
*to the next
True O
False O
The main disadvantage of NRZ
encoding is that it requires two signal
*changes to encode one bit
True O
False O
Transmission media lie below the
*transport layer
True O
False O
Microwaves are used for cellular
phone, satellite, and wireless LAN
communications
True O
False O
The minimum bandwidth of
Manchester and differential
*Manchester is twice that of NRZ
True O
False O
The digital signal can have only two
*Jevels
True O
False O
Information must be encoded into
signals before it can be transported
*.across communication media
True O
False O
______ is responsible for the transmission of individual bits from one to another node.
OSi model.
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- A network has a data transmission bandwidth of 30×106 bits per second. It uses CSMA/CD in the MAC layer. The maximum signal propagation time from one node to another node is 80 microseconds. The minimum size of a frame in the network is _bytes.arrow_forwardIt's the application layer that receives data when data is delivered from device A to device B via the Internet protocol stack. The application layer is the fifth layer that receives data when data is transmitted from device A to device B.arrow_forwardThe link layer provides application to application communication host to host communication node to node communication carrier pigeon to carrier pigeon communicationarrow_forward
- What is the primary responsibility of the physical layer? To transmit individual bits across a medium To transmit data between two directly connected network devices To transmit data between two hosts across a network of many interconnected devices To provide end-to-end services such as reliable delivery, flow control, and persistent connection To provide a service to the end user such as delivering a web page or transferring a file Suppose users share a 20 Mbps link. Also suppose each user transmits continuously at 2 Mbps when transmitting, but each user transmits only 30 percent of the time. If circuit switching is used, how many users can be supported? 5 10 2 20 What is the network address of the IP address 207.45.155.108/20? How many host addresses can you have in the following subnet 201.18.23.0/29? Assume that all addresses in this block can be used as a host address. How long does it take to send a 100MB file from host A to host B over a circuit-switched network?…arrow_forwardWhen data is transmitted from device A to device B through the Internet protocol stack, the fifth layer to receive data at device B is the application layer.arrow_forwardWhat are the differences between the various sliding window protocols used in the data connection layer?arrow_forward
- What is the difference between forwarding and routing?arrow_forward11. At the sending host, an Application-layer is passed to transport layer to --- --- - constitute transport-layer -------, which is then added with network-layer header information in order to create network-layer and then passed to link layer so that link-layer --- can be created. Segment, datagram, message, frame Message, segment, datagram, frame Segment, message, frame, datagram Datagram, message, segment, framearrow_forwardthe two levels of addresses required to deliver a packet to a host arearrow_forward
- Q22. A bit string, 0111101111101111110, needs to be transmitted at the data link layer. What is the string actually transmitted after bit stuffing?arrow_forward1. In a data link layer-level communication, sender wants to send following data in bits 1100111101110101110010101001 using n-bit Parity Check where n is equal to 7. Hence, total size of data block would be _____ bits. 2. Calculate the data block mentioned in the 1st question.arrow_forwardThe physical layer is in charge of coordinating the functions required to send a bit stream via a physical medium. Explain?arrow_forward
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