A denial-of-service (DoS) attack involves overwhelming a network or server with excessive traffic to render it unavailable.

CNAME records in DNS are used to provide an alias for another domain name, making it easier to manage multiple services under a single domain.

Incorrect gateway is the IP setting to be checked if a user is unable to access resources outside their local network.

Platform as a Service (PaaS) provides a platform allowing customers to develop, run, and manage applications without dealing with the underlying infrastructure.

To prioritize video conferencing traffic, the technician should configure Multicast IP addresses, which are used to efficiently route data to multiple recipients simultaneously, ideal for applications like video conferencing.

Establishing a theory of probable cause involves consulting with colleagues to brainstorm potential causes of the issue.

NetFlow can be used to collect and analyze network traffic for performance monitoring and troubleshooting, providing insights into bandwidth usage and traffic patterns.

A zero-day attack exploits a vulnerability on the same day that it is discovered and before a fix is released.

Physical access control devices restrict access to specific areas, ensuring only authorized personnel can enter.

The ranges 192.0.2.0 – 192.0.2.255 and 198.51.100.0 – 198.51.100.255 are reserved for documentation and testing purposes and are not intended for internal networks. The private ranges defined by RFC1918 (10.0.0.0 – 10.255.255.255 and 172.16.0.0 – 172.31.255.255) should be used for internal networks.

Verifying full system functionality ensures that all devices are functioning properly after replacing the network hardware.

Port Security prevents unauthorized devices from connecting to the network through a switch port by limiting the number of allowed MAC addresses per port.

An NTP client synchronizes its clock with an NTP server to ensure accurate timekeeping across the network.

Fibre Channel over Ethernet (FCoE) allows for the consolidation of storage and data traffic over a single network, reducing the need for separate storage networks.

To support both IPv4 and IPv6 addresses simultaneously, you should enable Dual-stack configuration on the network devices. This allows devices to handle both types of addresses.

SSH provides encrypted communication, ensuring data security during remote access, unlike Telnet which transmits data in plaintext.

Hypertext Transfer Protocol (HTTP) uses port 80 to deliver web pages over an unencrypted connection.

A remote access policy governs how employees should connect to the corporate network when working remotely, ensuring secure and authorized access.

Trivial File Transfer Protocol (TFTP) uses port 69 for transferring small files without authentication.

Biometrics use fingerprint or retina scans to grant access, ensuring a higher level of security by verifying unique personal identifiers.

HVAC (Heating, Ventilation, and Air Conditioning) is crucial for maintaining a controlled environment and preventing overheating of network devices, ensuring optimal performance and longevity.

The ‘ping’ command is used to test network connectivity between two devices.

Incorrect VLAN assignment might indicate that a network device is unable to communicate with devices in the same VLAN.

Routing loops involve a loop in the network routing paths, causing packets to circulate indefinitely.

Stateless Address Autoconfiguration (SLAAC) allows devices to automatically configure an IPv6 address without the need for a DHCP server. This feature is crucial for seamless network configuration.