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CS304 Final Term Current Paper

zareen Cyberian's Gold last edited by

Today paper of cs304
1 Mcqs from past paper
18 mcqs from book
What is a constant function object? Write one example 3 marks
What is Multiple inheritance and give example? 3 marks
A person works that a company , id ,name and draw a composite and aggergation … and what is composition and aggergation 5 marks
[Get information] class program 5 marks

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SOLVED CS609 Assignment No. 03 Solution and Discussion
CS609 - System Programming • solution discussion spring 2019 cs609 assignment • • zaasmi

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@moaaz
Another Idea solution
#include <bios.h> #include <dos.h> FILE *fp; unsigned char buf[1024]; unsigned char st[60]; unsigned char headno[10]; unsigned char secno[10]; unsigned char trackno[10]; void main (void) { int i; for (i=0; i<1024; i++) buf[i]=0; gets(st); fp=fopeon(st,”wb”); printf(“Head”); gets(headno); puts(headno); printf(“/nsector ”); gets(secno); puts(secno); printf(“/ntrack ”); gets(trackno); puts(trackno); i = biosdisk(2, 0x80, atoi(headno), atoi(trackno), atoi(trackno), 2,buf); } if(*(((char *)(&i))+1)= =0) { fwrite(buf,2,1024,fp); fclose(fp); } else { printf(“Cannot Read Error# = %x” i); }
SOLVED CS609 Quiz No.2 Solution and Discussion
CS609 - System Programming • solution discussion spring 2019 quiz 2 cs609 • • zaasmi

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@zareen said in CS609 Quiz No.2 Solution and Discussion:

What are the 3 types of viruses?

Resident Virus. Resident viruses live in your RAM memory. …

Multipartite Virus. …

Direct Action Virus. …

Browser Hijacker. …

Overwrite Virus. …

Web Scripting Virus. …

Boot Sector Virus. …

Macro Virus.
SOLVED CS403 GDB1 Solution and discussion
CS403 - Database Management Systems • solution discussion spring 2019 gdb1 ce403 • • zaasmi

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CS508 Assignment No. 01  Solution and Discussion
CS508 - Modern Programming Languages • solution discussion spring 2019 cs508 assignment no.1 • • zaasmi

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SOLVED BIO204 GDB1 Solution and discussion
BIO204 - Principles of Biochemical Engineering • solution discussion spring 2019 gdb1 bio204 • • zaasmi

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Freeze drying

Freeze drying (lyophilization) is a dehydration process which allows water to sublimate directly from solid phase to vapour phase at and below the freezing temperature of the material. Sub-atmospheric pressure (< 40 Pa) is maintained in most freeze-drying operations and the condensed water is immediately removed (Pikal, 2007). Freeze drying has been for decades one of the most preferred preservation methods for culture collection maintenance (Morgan et al., 2006). Due to high viability losses, an initial bacterial load of greater than 107 viable cells/mL has been recommended to ensure sufficient cells survive the freeze-drying process, thereby giving better success in storage, reconstitution and propagation (Bozoglu et al., 1987).

At commercial scale, operational and capital costs of freeze drying are very high. The freeze-drying process operates in batch mode and requires long drying times and large drying units to achieve mass production. Even so, freeze drying is currently the only drying method used at commercial scale for production of starter cultures intended for use as primary acid producers in dairy fermentations.

It is reported that the majority of bacterial death occurring during freeze drying happens during the freezing stage before the drying (sublimation) process commences. A slow freezing rate leads to higher bacterial death in the subsequent sublimation stage (Uzunova-Doneva and Donev, 2002). Rapid freezing, with formation of smaller ice crystals, favours better bacterial survival. On the other hand, formation of large ice crystals during slow freezing causes structural and physiological injury to the bacterial cells and causes damage to cell membranes that cannot be repaired upon subsequent drying or rehydration (Gardiner et al., 2000).

Many studies have exploited the addition of ‘protectant’ substances to enhance survival, and have investigated the use of low-cost food ingredients as protectants rather than substances such as glycine betaine (Cleland et al., 2004). Recent examples include work by Jagannath et al. (2010), who studied the survival of various probiotic bacteria after freeze drying. The survival obtained ranged from 67% to 70% depending on bacterial species. Zamora et al. (2006) compared the survival of twelve strains of lactic acid bacteria after freeze drying and reported a range from 3.3% to 100% depending on the bacterial type and protectant type used. For example, the survival of four strains of Lactococcus garviae was reported to be 100% when non-fat skim milk was used as the protectant (Zamora et al., 2006). Reddy et al. (2009) studied survival of three probiotic lactic acid bacteria with eleven different protectants (at various solids concentrations), and suggested that these protected not only the viability of the probiotic lactic acid bacteria but also their functional properties.
UNSOLVED EDU406 Quiz 4 Solution and Discussion
EDU406 - Critical Thinking and reflective Practice • solution discussion spring 2019 quiz 4 edu406 • • zareen

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SOLVED BIO601 GDB1 Solution and discussion
BIO601 - Proteomics • solution discussion spring 2019 gdb1 bio601 • • zaasmi

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Methods for Protein Analysis
Protein Separation Methods Western Blotting Protein Identification Methods
3A. Edman degradation
3B. Mass spectrometry
However, and perhaps remarkably, if as shown above we digest samples of ourprotein with as few as two or three different endoproteases with different
specificities, we can usually use the resulting digestion patterns (again, analyzedby mass spectrometry to provide highly accurate determination of the fragmentmolecular weights) to produce a unique identification of our unknown protein:Again, mass spectrometry is uniquely well-suited for such analyses because itcan yield very accurate determinations of molecular weights from very even verysmall amounts of fragments resulting from the digestion of a particular protein.Techniques have now been developed by which proteins separated in two-dimensional gels can be digested within the gels and then injected directly into amass spectrometer for analysis of the resulting fragments.
SOLVED CS204 GDB1 Solution and discussion
CS204 - Cyber Law • solution discussion spring 2019 gdb1 cs204 • • zaasmi

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Actually, it’s difficult to compare the cryptographic strengths of symmetric and asymmetric key encryptions. Even though asymmetric key lengths are generally much longer (e.g. 1024 and 2048) than symmetric key lengths (e.g. 128 and 256), it doesn’t, for example, necessarily follow that a file encrypted with a 2048-bit RSA key (an asymmetric key) is already tougher to crack than a file encrypted with a 256-bit AES key (a symmetric key).

Instead, it would be more appropriate to compare asymmetric and symmetric encryptions on the basis of two properties:

Their computational requirements, and

Their ease of distribution

Symmetric key encryption doesn’t require as many CPU cycles as asymmetric key encryption, so you can say it’s generally faster. Thus, when it comes to speed, symmetric trumps asymmetric. However, symmetric keys have a major disadvantage especially if you’re going to use them for securing file transfers.

Because the same key has to be used for encryption and decryption, you will need to find a way to get the key to your recipient if he doesn’t have it yet. Otherwise, your recipient won’t be able to decrypt the files you send him. However way you do it, it has to be done in a secure manner or else anyone who gets a hold of that key can simply intercept your encrypted file and decrypt it with the key.

The issue of key distribution becomes even more pronounced in a file transfer environment, which can involve a large number of users and likely distributed over a vast geographical area. Some users, most of whom you may never have met, might even be located halfway around the world. Distributing a symmetric key in a secure manner to each of these users would be nearly impossible.

Asymmetric key encryption doesn’t have this problem. For as long as you keep your private key secret, no one would be able to decrypt your encrypted file. So you can easily distribute the corresponding public key without worrying about who gets a hold of it (well, actually, there are spoofing attacks on public keys but that’s for another story). Anyone who holds a copy of that public key can encrypt a file prior to uploading to your server. Then once the file gets uploaded, you can decrypt it with your private key.

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CS304 Final Term Current Paper

SOLVED CS609 Assignment No. 03 Solution and Discussion CS609 - System Programming • solution discussion spring 2019 cs609 assignment • • zaasmi

SOLVED CS609 Quiz No.2 Solution and Discussion CS609 - System Programming • solution discussion spring 2019 quiz 2 cs609 • • zaasmi

SOLVED CS403 GDB1 Solution and discussion CS403 - Database Management Systems • solution discussion spring 2019 gdb1 ce403 • • zaasmi

CS508 Assignment No. 01 Solution and Discussion CS508 - Modern Programming Languages • solution discussion spring 2019 cs508 assignment no.1 • • zaasmi

SOLVED BIO204 GDB1 Solution and discussion BIO204 - Principles of Biochemical Engineering • solution discussion spring 2019 gdb1 bio204 • • zaasmi

UNSOLVED EDU406 Quiz 4 Solution and Discussion EDU406 - Critical Thinking and reflective Practice • solution discussion spring 2019 quiz 4 edu406 • • zareen

SOLVED BIO601 GDB1 Solution and discussion BIO601 - Proteomics • solution discussion spring 2019 gdb1 bio601 • • zaasmi

SOLVED CS204 GDB1 Solution and discussion CS204 - Cyber Law • solution discussion spring 2019 gdb1 cs204 • • zaasmi

SOLVED CS609 Assignment No. 03 Solution and Discussion
CS609 - System Programming • solution discussion spring 2019 cs609 assignment • • zaasmi

SOLVED CS609 Quiz No.2 Solution and Discussion
CS609 - System Programming • solution discussion spring 2019 quiz 2 cs609 • • zaasmi

SOLVED CS403 GDB1 Solution and discussion
CS403 - Database Management Systems • solution discussion spring 2019 gdb1 ce403 • • zaasmi

CS508 Assignment No. 01  Solution and Discussion
CS508 - Modern Programming Languages • solution discussion spring 2019 cs508 assignment no.1 • • zaasmi

SOLVED BIO204 GDB1 Solution and discussion
BIO204 - Principles of Biochemical Engineering • solution discussion spring 2019 gdb1 bio204 • • zaasmi

UNSOLVED EDU406 Quiz 4 Solution and Discussion
EDU406 - Critical Thinking and reflective Practice • solution discussion spring 2019 quiz 4 edu406 • • zareen

SOLVED BIO601 GDB1 Solution and discussion
BIO601 - Proteomics • solution discussion spring 2019 gdb1 bio601 • • zaasmi

SOLVED CS204 GDB1 Solution and discussion
CS204 - Cyber Law • solution discussion spring 2019 gdb1 cs204 • • zaasmi