Which of the following technologies allows for the centralized control of network resources using software?
A NFV
B VLAN
C NAT
D SDN
Software Defined Networking (SDN) allows for the centralized control of network resources through software. It decouples network control from the physical hardware, providing flexibility, automation, and efficient resource management across the network.
What is the primary function of Network Function Virtualization (NFV) in modern networks?
A Virtualize network functions
B Increase network speed
C Route data packets
D Improve security
NFV allows network functions like firewalls, load balancers, and routers to be virtualized and run on standard hardware. This reduces hardware dependency, increases scalability, and lowers operational costs by using software to manage network functions.
Which protocol is primarily used for providing a secure, encrypted connection between a user and a remote network?
A SMTP
B DNS
C VPN
D HTTP
A Virtual Private Network (VPN) provides a secure, encrypted connection over a public network, allowing users to securely access a private network remotely. It ensures data privacy and security by encrypting all transmitted data.
Which of the following is an advantage of using SDN in modern networks?
A Manual configuration
B Centralized control
C Increased hardware reliance
D Reduced network flexibility
SDN enables centralized control of network resources, making it easier to manage and configure networks dynamically. Network administrators can automate tasks and configure network policies through software, improving flexibility and efficiency.
What is the main purpose of virtualization in NFV (Network Function Virtualization)?
A Increase bandwidth
B Enhance security
C Virtualize network functions
D Improve routing
NFV uses virtualization technology to run network functions such as firewalls, load balancers, and intrusion detection systems on software platforms. This reduces the need for specialized hardware and makes the network more adaptable to changing demands.
Which of the following best describes the concept of network slicing in the context of SDN?
A Creating isolated network segments
B Scaling bandwidth
C Enhancing security
D Routing data packets
Network slicing in SDN refers to creating isolated virtual networks, each tailored to specific applications or services. This allows operators to customize and allocate network resources efficiently, ensuring quality of service for diverse applications.
Which of the following protocols is used for managing network configurations and monitoring performance in SDN?
A SNMP
B OpenFlow
C IP
D TCP
OpenFlow is a protocol used in SDN to manage the flow of data across the network. It enables centralized control by allowing network administrators to configure and monitor traffic flow through software defined switches.
What is a key advantage of using NFV in a cloud environment?
A Increased hardware costs
B Limited network function availability
C Reduced dependence on physical hardware
D Reduced scalability
NFV eliminates the need for dedicated physical hardware by using virtualization to run network functions. This leads to reduced capital expenses, greater flexibility, and easier scalability in cloud environments.
Which layer of the OSI model is responsible for routing data between different networks in SDN architecture?
A Transport
B Data Link
C Physical
D Network
The Network layer in SDN architecture is responsible for routing data between different networks. It handles packet forwarding and ensures that data reaches its destination by determining the best available route through the network.
Which of the following describes a major benefit of SDN in managing large scale data centers?
A Increased physical connections
B Simplified hardware management
C Increased network flexibility
D Reduced network traffic
SDN provides centralized control, allowing for dynamic reconfiguration of the network. This flexibility helps large scale data centers efficiently allocate resources, optimize network performance, and respond quickly to changing workloads.
Which of the following technologies is used in NFV to allow network functions to run on virtualized hardware?
A Hypervisor
B Load balancer
C Firewall
D Router
A hypervisor is used in NFV to create and manage virtual machines on physical hardware. It enables network functions like firewalls and routers to run as virtualized software, improving resource utilization and flexibility.
What is the role of SDN in improving network security?
A Encrypts data packets
B Provides physical firewalls
C Routes data across multiple paths
D Allows for centralized security policies
SDN improves network security by centralizing control, which allows administrators to define and enforce security policies across the entire network. This enables faster response to threats and better traffic monitoring.
Which of the following is an example of a network function that can be virtualized using NFV?
A IP routing
B HTTP
C Firewalls
D DNS
NFV allows network functions like firewalls, load balancers, and intrusion detection systems to be virtualized. These functions can run on standard hardware as software instances, improving efficiency and scalability.
Which of the following is the main feature of SDN that distinguishes it from traditional networking?
A Independent hardware
B Static configurations
C Centralized control
D Point to point routing
SDN is distinguished by its centralized control, where network management and configuration are handled by a central software controller. This enables more flexible, automated network management compared to traditional, hardware based networking.
Which of the following is a key characteristic of SDN that allows it to respond to network conditions in real time?
A Centralized control
B Manual configuration
C Static routing
D Hardware based routing
SDN’s centralized control allows the network to be reconfigured dynamically and respond to real time conditions, enabling network administrators to optimize performance, balance traffic, and apply security policies instantly based on current network demands.