(Authentic) Cisco 350-501 Exam Questions — Pass Your Exam in First Attempt

IP Addressing

• IP addresses are numerical labels assigned to devices participating in a computer network that uses the Internet Protocol for communication.
• IP addresses uniquely identify each device on the network.
• There are two main versions of IP addresses: IPv4 and IPv6.
• IPv4 addresses are 32-bit addresses, typically represented in dotted decimal notation (e.g., 192.168.1.1).
• IPv6 addresses are 128-bit addresses, using a more complex hexadecimal representation (e.g., 2001:0db8:85a3:0000:0000:8a2e:0370:7334).
• IP addresses are crucial for routing data packets across networks.
• Subnetting divides large networks into smaller subnetworks, improving network management and security.
• Static IP addresses are fixed addresses assigned to a device, while dynamic addresses are assigned temporarily.
• Private IP addresses are used within a private network, not directly accessible from the internet.

Network Security

• Network security involves protecting computer networks from unauthorized access, use, disclosure, disruption, modification, or destruction.
• Firewalls control network traffic, blocking unwanted connections and protecting against malicious attacks.
• Intrusion detection and prevention systems (IDS/IPS) monitor network traffic for malicious activity and take actions to block threats.
• Network access control verifies the identity and authorization of users trying to access the network.
• Encryption protects sensitive data transmitted over the network, ensuring confidentiality.
• Secure protocols like HTTPS, SSH, and TLS protect communications between devices.
• Data loss prevention (DLP) systems prevent sensitive data from leaving the network or being compromised.
• Network segmentation isolates parts of a network to limit the impact of a security breach.
• Authentication methods verify user identities to secure access to network resources.

Routing Protocols

• Routing protocols enable routers to exchange information about network paths and determine the best paths for routing data packets.
• Routing protocols allow routers to dynamically adjust routes based on network changes, ensuring efficient data transmission.
• Examples of routing protocols include RIP (Routing Information Protocol), OSPF (Open Shortest Path First), BGP (Border Gateway Protocol), and EIGRP (Enhanced Interior Gateway Routing Protocol).
• Different protocols have different characteristics and functionalities, each tailored to manage specific network requirements.
• These protocols determine and maintain the routing tables within routers. Routing tables direct data packets to their intended destinations.

Virtualization Technologies

• Virtualization technologies create virtual instances of computing resources, including servers, storage, and networks.
• This allows running multiple virtual machines (VMs) on a single physical machine.
• Hypervisors create and manage VMs, simulating hardware for each virtual environment.
• Virtualization improves resource utilization, allows for workload consolidation, and facilitates disaster recovery.
• Virtual networks allow creating virtual versions of physical networks, enabling isolation and security.
• Virtual storage allows efficient use of storage resources and enhances data backup and recovery.
• Increased scalability and agility, cost reductions, and improved security are key benefits of using virtualization technologies.

Network Troubleshooting

• Network troubleshooting is the process of identifying and resolving problems with a computer network.
• Starting with understanding the symptoms and what is not working, a systematic approach is key to identify source of the problem
• Tools like network analyzers and packet sniffers can capture and examine network traffic to identify issues.
• Protocol analyzers (like Wireshark) help to understand network communication details to identify errors in specific protocols.
• Basic network configuration checks like IP addresses, DNS settings, and routing tables can be checked first.
• Common network problems include connectivity issues, slow performance, and security breaches.
• Troubleshooting steps often involve isolating the problem area, testing hypotheses, monitoring logs and analyzing results, and implementing corrective actions.
• Maintaining accurate records of attempted solutions is crucial in ongoing problem-solving.
• Network documentation, diagrams, and policies help to understand the configuration and processes more fully.