@moaaz said in CS314 Assignment 1 Solution and Discussion:

The complete channel bandwidth.

Bandwidth is a fixed quantity, so it cannot be changed. Hence, the channel capacity is directly proportional to the power of the signal, as SNR = (Power of signal) / (power of noise). so for example a signal-to-noise ratio of 1000 is commonly expressed as: 10 * log10(1000) = 30 dB.

Capacity = bandwidth * log2(1 + SNR)

Output1 : C = 30000 * log2(1 + SNR) = 30000 * 11.62 = 348600 bps

@moaaz said in CS407 Assignment 1 Solution and Discussion:

What access mode of command line interface will be more suitable to perform remote configurations on the router in secure manners?

Network infrastructure devices often provide a range of different access mechanisms, including console and asynchronous connections, as well as remote access based on protocols such as Telnet, rlogin, HTTP, and SSH. Some mechanisms are typically enabled by default with minimal security associated with them; for example, Cisco IOS software-based platforms are shipped with console and modem access enabled by default. For this reason, each infrastructure device should be carefully reviewed and configured to ensure only supported access mechanisms are enabled and that they are properly secured.

The key steps to securing both interactive and management access to an infrastructure device are:

• Restrict Device Accessibility

Limit the accessible ports, restrict the permitted communicators and restrict the permitted methods of access.

• Present Legal Notification

Display legal notice, developed in conjunction with company legal counsel, for interactive sessions.

• Authenticate Access

Ensure access is only granted to authenticated users, groups, and services.

• Authorize Actions

Restrict the actions and views permitted by any particular user, group, or service.

• Ensure the Confidentiality of Data

Protect locally stored sensitive data from viewing and copying. Consider the vulnerability of data in transit over a communication channel to sniffing, session hijacking and man-in-the-middle (MITM) attacks.

• Log and Account for all Access

Record who accessed the device, what occurred, and when for auditing purposes.

@zaasmi said in MGT211 GDB 1 Solution and Discussion:

How credit sales could be helpful for a businessman to boost his business?

Offering credit often encourages customers to speed up or increase the amount of their spending. Some businesses offer credit to gain a competitive advantage in their market. Balancing the potential for increased sales with the risk of reduced cash flow is an important part of managing risk in your business.