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Margaret [11]
1 year ago
12

Compare the memory organization schemes of contiguous memory allocation and paging with respect to the following issues: a. Exte

rnal fragmentation b. Internal fragmentation c. Ability to share code across processes
Computers and Technology
1 answer:
Free_Kalibri [48]1 year ago
5 0

Answer:

The comparison is based on memory organization schemes of contiguous memory allocation and paging with respect to External fragmentation, Internal fragmentation and Ability to share code across processes.

Explanation:

Memory organization schemes of contiguous memory allocation:

Contiguous memory allocation schemes suffers from external fragmentation. The reason is that address space is distributed contiguously and the holes and gaps keep growing when the old processes die and new processes are introduced. The variable size partition suffers from external fragmentation however the fixed size partitions do not suffer from external fragmentation. Contiguous memory allocation with variable size partitions does not encounter an internal fragmentation but with fixed size partitions suffers from internal fragmentation. Contiguous memory allocation does not support sharing code across processes. This is because the virtual memory segment of a process is not fragmented into non-contiguous fine grained blocks.

Paging:

Paging does not encounter external fragmentation as pages are of the fixed or equal size. So this reduces external fragmentation. However paging suffers from internal fragmentation. This is because a process can request more space or it can request for a less space. When page is allocated to the such a process that page is no longer utilized.This results in internal fragmentation because of the wastage of space even when the page has internal space but cannot be fully utilized. Paging allows to share code across processes.

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Answer:

see explaination

Explanation:

Function Real calcDiscountPrice(Real price, Real percentage) // Calculate the discount.

Declare Real discount= (price * percentage) / 100.0 // Subtract the discount from the price.

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5 0
1 year ago
Which type of address is used at the transport layer to identify the receiving application?
monitta

Answer:

Port number  is used at the transport layer to identify the receiving application

Explanation:

Transport layer is responsible for overall “end-to-end” communication. It provides communication service to the application process which might be running on “different hosts”.

TCP (Transmission Control Protocol) or UDP (User Data Protocol) is the protocol used in the Transport layer. The port number is essential so that the transport layer can carry packets to the right destination pointing to the right application.

A port number usually contains 16 bit integer. Normally this number will send along with the header. Port number plays a major role in Transport layer.

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1 year ago
An employee sets up an automation that transfers files in a specific folder on their PC to a remote drive for archiving, provide
Yuri [45]

Answer:

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Explanation:

8 0
1 year ago
In a survey of 7200 T.V. viewers, 40% said they watch network news programs. Find the margin of error for this survey if we want
olga_2 [115]

Answer:

Margin of Error=M.E= ± 0.0113

Explanation:

Margin of Error= M.E= ?

Probability that watched network news programs = p = 0.4

α= 95%

Margin of Error =M.E= zₐ/₂√p(1-p)/n

Margin of Error=M.E= ±1.96 √0.4(1-0.4)/7200

Margin of Error=M. E = ±1.96√0.24/7200

Margin of Error=M. E- ±1.96* 0.005773

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2 years ago
In this project, you’ll create a security infrastructure design document for a fictional organization. The security services and
gogolik [260]

Answer and explanation:

Authentication:

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Authentication works as follows:  

Prompting the user to enter the credentials.  

Send the credentials to the authentication server.  

Match the credentials.  

Authorize the user and grants the acces

External Website security:  

External Website security is important to protect the website from hackers, electronic thieves and to prevent security breach.  

Use of firewall.  

Implement the access control.  

Use of MVC (Model View Controller) to create different view for different type of user.  

Use of encryption.  

Use of SSL certificate.

Use of security plugins.  

Implement tools and techniques for backup and disaster recovery.  

Use of network monitoring team.  

Internal Website security:  

Use of authentication to identify the user identity.  

Use of authorization to provide different user with the specific privileges and access.  

Encrypt or hide sensitive web pages.  

By implementing IT policies.  

Educate the user about the website.  

Remote Access Solution:  

Remote access provides better security, cost efficiency, ease of management, and increased availability.  

Remote access can be deployed by using the RAS gateway (single tenant or multi-tenant):

VPN(Virtual private network), BGP(Border gateway protocol), hyper-V network can be used to provide the remote access.  

Remote access can be provided by simple configuration. Remote access involves enabling user, managing their access, protecting the assets, use of remote desktop protocol and managing server sessions, remoteApp and personal and pooled desktop.  

Firewall and Basic rules recommendations:  

Firewall is important for managing the traffic and providing external website security.  

Rules to prevent SQL injection and XSS.  

Allow only the specific type of traffic.  

Use access rules for IP security.  

Implement certain IT policies.  

Can implement their own rule.  

Wireless Security:  

Nowadays Wifi is being used in every organization and it prevents the network from malicious and unauthorized access.  

Wireless security can be provided by the use of encryption, decryption, authentication and authorization.  

VLAN configuration:  

VLAN are important for traffic filtering and providing the logical division of the network.  

VLAN can be configured for web interface and can provide web filtering.  

In the following manner VLAN can be configured for web interface:  

Switching => VLAN => Advanced => VLAN Membership  

Switching => VLAN > Advanced => Port PVID Configuration.  

VLAN web filtering:  

VLAN can be configured between router and firewall, router and gateway, router and switch and by doing so one can filter the web traffic that passes the network.  

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Application policy recommendations:  

Application policy includes use of cookies, social media integration, access control, generating notifications and implanting other organization and IT rules.  

Security and privacy policy recommendations:  

It includes the list of security methods to be implemented for traffic filtering, IP spoofing, user authentication and other specific policy for the website.  

Intrusion detection or prevention for systems containing customer data:  

IPS is implemented behind the firewall and it matches the incoming traffic against the security policies. It matches the signature and handles the intrusion if any and generates the log and alerts for the same.  

IDS goal is to identify malicious traffic before it can proceed further into the network. It generates alerts and notification so that the network monitoring team can look after the intrusion.  

Use of anomaly based detection and prevention system is the better choice.

6 0
1 year ago
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