BIT451 · TU past paper
Network and System Administration 2081 question paper
The complete TU 2081 exam paper for Network and System Administration (BIT451), all 12 questions with solved model answers written to the mark scheme.
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- 110 marksCron and Crontab job schedulingHideAnswer
Explain job scheduling with Cron and Crontab. Briefly explain about Linux server installation.[10]
Cron is a time-based job scheduler in Unix/Linux systems that automatically executes tasks (commands or scripts) at specified intervals without manual intervention. - Runs in the background as a daemon process - Executes jobs at predeter...
- 210 marksIP-based virtual hosting and advantagesHideAnswer
Illustrate the concept of IP-based virtual hosting. How is it carried out? What are its advantages?[10]
IP-based virtual hosting is a technique that allows a single physical web server to host multiple websites, where each website is associated with a unique IP address. Each domain name is mapped to a different IP address on the same serve...
- 310 marksFirewall concepts and requirementsHideAnswer
What do you understand by Firewall? Why is it required? Differentiate between packet-level and application-level firewall.[10]
A firewall is a network security system that acts as a barrier between an internal network (or a computer) and external networks (such as the Internet). It monitors and controls incoming and outgoing network traffic based on predetermine...
- 45 marksClassless Inter-Domain RoutingHideAnswer
How do you think classless Inter-Domain Routing improves the efficiency of address distribution? Explain. [5]
Classless Inter-Domain Routing (CIDR) is a method of allocating IP addresses and routing that removes the rigid class-based structure (Class A, B, C) of traditional IP addressing. - CIDR uses variable-length subnet masks (VLSM) instead o...
- 55 marksServer monitoring and management procedureHideAnswer
How is server monitoring and management carried out? Why is it carried out? [5]
Server monitoring and management involves several key practices: - Real-time observation of server performance metrics (CPU usage, memory, disk space, network bandwidth) - Automated alerts when thresholds are exceeded - Log file analysis...
- 65 marksSMTP relay and operationHideAnswer
What is SMTP relay and how does it work? [5]
SMTP relay is a mechanism that allows an email message to be forwarded from one mail server to another mail server on its way to the final destination. It enables mail servers to act as intermediaries in the email delivery process, passi...
- 75 marksFTP principles and anonymous FTPHideAnswer
Elaborate FTP principles. How does anonymous FTP work? [5]
File Transfer Protocol (FTP) is an application-layer protocol used for transferring files between computers over a network. The key principles are: - FTP operates on a client-server model where the client initiates connection to an FTP s...
- 85 marksBandwidth management conceptsHideAnswer
What do you understand by bandwidth management? Explain. [5]
Bandwidth management refers to the process of monitoring, controlling, and optimizing the allocation and usage of available network bandwidth to ensure efficient network performance and fair resource distribution among users and applicat...
- 95 marksDNS zone transfer conceptsHideAnswer
Explain the concept of DNS zone transfer with an example. [5]
A DNS zone transfer is the process of copying all DNS records (the complete zone file) from a primary DNS server to a secondary DNS server. It ensures that secondary nameservers maintain an identical copy of the zone database for redunda...
- 105 marksDHCP options and common optionsHideAnswer
List three common DHCP options and explain any one. [5]
- Option 3: Router (Default Gateway) 2. Option 6: Domain Name Server (DNS) 3. Option 15: Domain Name --- Option 6 is a DHCP option that provides the IP addresses of DNS servers to the client. This allows the client to resolve domain nam...
- 115 marksSDN controller concepts and benefitsHideAnswer
Briefly explain about SDN controller. [5]
An SDN (Software-Defined Networking) controller is a centralized, logically centralized software application that manages and controls the behavior of the network by communicating with network devices (switches, routers) through southbou...
- 125 marksMulticast addressing and conceptsHideAnswer
Write short notes on: (a) Multicast (b) IPv4 [5]
Definition: Multicast is a communication method where data is transmitted from one source to multiple destinations simultaneously. It is a one-to-many transmission model where a single packet is sent once and delivered to a group of inte...