Which among the following control and manage the communication between VNF with computing, storage, and network resources along with virtualization?
In the context of Network Function Virtualization (NFV), the Virtualized Infrastructure Manager (VIM) is responsible for controlling and managing the NFV infrastructure (NFVI), which includes compute, storage, and network resources. The VIM operates within one operator's infrastructure domain and is a key component of the Management and Orchestration (MANO) framework. It ensures that the virtualized resources are appropriately allocated and managed to support the deployment and operation of Virtual Network Functions (VNFs).
The--------------protocol works in the network layer and is responsible for handling the error codes during the delivery of packets. This protocol is also responsible for providing communication in the TCP/IP stack.
The Internet Control Message Protocol (ICMP) operates at the network layer and is integral to the Internet Protocol suite. It is utilized primarily for error handling during packet delivery, such as informing senders of a failed delivery due to unreachable destinations or other path-related issues. ICMP is also used for diagnostic purposes, with tools like ping and traceroute relying on ICMP messages to test connectivity and trace packet routes. Unlike transport layer protocols like TCP or UDP, ICMP does not establish a connection before sending messages, making it a connectionless protocol. This characteristic allows ICMP to quickly relay error messages and network information without the overhead of establishing a session.
Which of the following filters can be used to detect UDP scan attempts using Wireshark?
The correct filter to detect UDP scan attempts using Wireshark is not listed among the options provided. To detect UDP scan attempts, a Wireshark filter that targets UDP traffic specifically would be used, rather than an ICMP type and code filter. A common method to detect a UDP scan is to look for a large amount of UDP packets sent to different ports, which can be indicative of a scanning activity. The filter would typically include parameters that isolate UDP traffic, such asudp.portorudp.dstportcombined with a range or list of ports.
Disaster Recovery is a _________.
Disaster Recovery (DR) is a subset of business continuity planning which focuses on the IT systems and operations of a business after a disaster. It's a comprehensive approach that ensures all critical business functions can be resumed quickly and effectively in the event of a crisis. DR is not just about data or security; it encompasses all aspects of the business that are necessary to continue operations and protect the interests of stakeholders.
Henry needs to design a backup strategy for the organization with no service level downtime. Which backup method will he select?
A hot backup, also known as an online backup or dynamic backup, is the process of backing up data while the system continues to be in operation. This means that there is no need for system downtime or interruption in services while the backup is taking place. It is mostly used in systems where operations are critical and cannot afford any downtime, such as databases and servers that must be available 24/7. The hot backup method allows for data to be backed up at regular intervals with minimal impact on the system's performance, ensuring that the organization can maintain continuous service levels.
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