a)
DNS:
DNS stands for Domain Name System. It is the way that internet domain names are located and translated into internet protocol address.
TCP:
TCP stands for Transmission Control Protocol which is a standard that establishes and maintain a network conversion with the use of application programs.
Round Trip Time (RTT):
The length of time it takes for a signal to be sent along with the length of time to be acknowledged is called the round trip time.
There are “n” DNS servers in the connection.
Amount of elapsed time:
While clicking on a link to open a web page, the IP address of the associated web page is not cached in the local host and hence a DNS lookup is used to identify the local host.
As the webpage is not cached and therefore must be found before the file can be requested and then received by the contacting host.
It is given that visits to “n” DNS servers to find the site occur a round-trip time (RTT) which adds up to “RTT1, RTT2,… RTTn” ,in which the numbers of RTT represents the DNS number.
- Therefore the total time it takes for the host to obtain the IP address can be denoted as: “RTT1+RTT2+RTT3+…RTTn”.
Given Data:
The HTML file references eight very small objects on the same server.
To Find:
Non Persistent HTTP with no parallel TCP connections:
b)
DNS:
DNS stands for Domain Name System. It is the way that internet domain names are located and translated into internet protocol address.
TCP:
TCP stands for Transmission Control Protocol which is a standard that establishes and maintain a network conversion with the use of application programs.
Round Trip Time (RTT):
The length of time it takes for a signal to be sent along with the length of time to be acknowledged is called the round trip time.
There are “n” DNS servers in the connection.
Amount of elapsed time:
While clicking on a link to open a web page, the IP address of the associated web page is not cached in the local host and hence a DNS lookup is used to identify the local host.
As the webpage is not cached and therefore must be found before the file can be requested and then received by the contacting host.
It is given that visits to “n” DNS servers to find the site occur a round-trip time (RTT) which adds up to “RTT1, RTT2,… RTTn” ,in which the numbers of RTT represents the DNS number.
- Therefore the total time it takes for the host to obtain the IP address can be denoted as: “RTT1+RTT2+RTT3+…RTTn”.
Given Data:
The HTML file references eight very small objects on the same server.
To Find:
Non Persistent HTTP with browser configured for 5 parallel connections:
c)
DNS:
DNS stands for Domain Name System. It is the way that internet domain names are located and translated into internet protocol address.
TCP:
TCP stands for Transmission Control Protocol which is a standard that establishes and maintain a network conversion with the use of application programs.
Round Trip Time (RTT):
The length of time it takes for a signal to be sent along with the length of time to be acknowledged is called the round trip time.
There are “n” DNS servers in the connection.
Amount of elapsed time:
While clicking on a link to open a web page, the IP address of the associated web page is not cached in the local host and hence a DNS lookup is used to identify the local host.
As the webpage is not cached and therefore must be found before the file can be requested and then received by the contacting host.
It is given that visits to “n” DNS servers to find the site occur a round-trip time (RTT) which adds up to “RTT1, RTT2,… RTTn” ,in which the numbers of RTT represents the DNS number.
- Therefore the total time it takes for the host to obtain the IP address can be denoted as: “RTT1+RTT2+RTT3+…RTTn”.
Given Data:
The HTML file references eight very small objects on the same server.
To Find:
Persistent HTTP:
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Chapter 2 Solutions
Computer Networking: A Top-Down Approach (7th Edition)
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- Q2: Solve the equation using the simplex method Max. Z 13x1 +11x2 Subject to constraints 4x1 +5x21500 5x1 +3x21575 x1 +2x2 <420 x1, x2≥0arrow_forwardBasically, you must build a desktop/android application that utilizes cryptographic techniques/protocols to secure communication (or data at rest). Try to achieve confidentiality, integrity, availability, authentication, non-repudiation (preferably all of them, otherwise few of them based on the requirement).You must demonstrate the use of these cryptographic techniques by showing some outputs/visualization results or captured traffic such as through Wireshark.1. Secure Chat ApplicationDescription: Build an encrypted chat application for desktop or Android that ensures confidentiality, integrity, authentication, and non-repudiation.Features:-- End-to-end encryption using AES-256 or Signal Protocol.--Digital signatures for non-repudiation.--Message integrity verification using HMAC.Secure login using two-factor authentication (2FA).--Server-side availability mechanisms (e.g., load balancing, backup storage). Technologies: Python (PyQt + PyCryptodome), Java (Android), Firebase for…arrow_forwardQ1: Draw the equation of z with constraints according to the graphic method Max Z-3 P1+5 P2 s.t. P1 4 P2 6 3 P1+2 P2 <18 P1, P2 20arrow_forward
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