Reference no: EM13250794
Question 1:
QoS (Quality of Service) refers to a broad collection of networking technologies and techniques. The goal of QoS is to provide guarantees on the ability of a network to deliver predictable results. Quality of Service (QoS) is a major consideration for any new or existing communications implementation.
QoS is especially important for the new generation of Internet applications such as VoIP, video-on-demand and other consumer services. Some core networking technologies like Ethernet were not designed to support prioritized traffic or guaranteed performance levels, making it much more difficult to implement QoS solutions across the Internet.
Calls that are made using Skype, travel over the public internet and your own corporate network. Skype does not control your corporate network or the public internet, therefore QoS cannot be guaranteed. The bandwidth required by Skype depends on the type of calls you want to make.
|
Quality Requirements for popular Applications
|
|
Application
|
Bandwidth
|
Delay
|
Jitter
|
Reliability
|
|
Email
|
Low
|
Low
|
Low
|
High
|
|
File Transfer
|
Medium
|
Low
|
Low
|
High
|
|
Web Browsing
|
Medium
|
Medium
|
Low
|
High
|
|
Audio Streaming
|
Medium
|
Low
|
High
|
Low
|
|
Video Streaming
|
High
|
Low
|
High
|
Low
|
|
Telephony
|
Low
|
High
|
High
|
Low
|
|
Video conferencing
|
High
|
High
|
High
|
Low
|
Explain the following elements of network performance within the scope of QoS;
a) Reliability
b) Delay (latency)
c) Jitter
d) Bandwidth (throughput)
Question -2
There is a growing requirement to meet or exceed expectations of end users and applications communicating over a packet-switched network. In order to fulfil this requirement, different techniques are used to improve the QoS. Explain the following;
a) Scheduling
b) Traffic Shaping
c) Admission control
d) Resource reservation
|
What is the final steady state value of the current
: A DC circuit consists of a battery and a coil (not a resistor). The coil has a resistance of R = 5W and an inductance of L = 100mH. At a particular instant in time after a battery is connected across the coil, the current is i = 2.0 A
|
|
What was the gauge pressure of the water at the bottom
: What was the gauge pressure (in kPa) of the water at the bottom of the tank when it was completely full of water? What would the air pressure have to be (in kPa) beneath the empty tank in the order to just raise it up for movement?
|
|
Explain what volume of kcl solution is required to react
: what volume of 0.150 M KCl solution is required to react completely with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the chemical reaction
|
|
Discuss the purpose of the two timers in the ladder logic
: he operation of the system requires that, before any change of motion direction, the motor must be in a full stop by push the "STOP" button Assuming bother timer TD1 and TD2 have the same preset time of 1 minute
|
|
Quality of service
: The ability of a network to deliver predictable results. Quality of Service (QoS) is a major consideration for any new or existing communications implementation.
|
|
The ethanol reacts with tosylate nucleophile
: ethanol reacts with tosylate/nucleophile and the following: Hydroxide, cyanide, bromide, sodium propoxide and ammonia. What are the products from each
|
|
Life with individuals with disabilities
: What experiences have you had in your life with individuals with disabilities? What type of emotional responses have you had when you have seen individuals with disabilities? What preconceived notions have you had about people with disabilities in th..
|
|
Determine the torque at the knee
: A person is performing a knee extension exercise with a 100 N weight acting at the ankle. What is the torque at the knee necessary to maintain a knee joint angle of -60q relative to the right horizontal passing through the knee joint
|
|
On which contract were the workers more productive
: On which contract were the workers more productive? What is the percentage difference of productivity between the two contracts?
|