Cisco Certified Internetwork Expert (CCIE) - Enterprise Infrastructure
1 Network Architecture and Design
1-1 Enterprise Network Design Principles
1-2 Network Segmentation and Micro-Segmentation
1-3 High Availability and Redundancy
1-4 Scalability and Performance Optimization
1-5 Network Automation and Programmability
1-6 Network Security Design
1-7 Network Management and Monitoring
2 IP Routing
2-1 IPv4 and IPv6 Addressing
2-2 Static Routing
2-3 Dynamic Routing Protocols (RIP, EIGRP, OSPF, IS-IS, BGP)
2-4 Route Redistribution and Filtering
2-5 Route Summarization and Aggregation
2-6 Policy-Based Routing (PBR)
2-7 Multi-Protocol Label Switching (MPLS)
2-8 IPv6 Routing Protocols (RIPng, EIGRP for IPv6, OSPFv3, IS-IS for IPv6, BGP4+)
2-9 IPv6 Transition Mechanisms (Dual Stack, Tunneling, NAT64DNS64)
3 LAN Switching
3-1 Ethernet Technologies
3-2 VLANs and Trunking
3-3 Spanning Tree Protocol (STP) and Variants (RSTP, MSTP)
3-4 EtherChannelLink Aggregation
3-5 Quality of Service (QoS) in LANs
3-6 Multicast in LANs
3-7 Wireless LANs (WLAN)
3-8 Network Access Control (NAC)
4 WAN Technologies
4-1 WAN Protocols and Technologies (PPP, HDLC, Frame Relay, ATM)
4-2 MPLS VPNs
4-3 VPN Technologies (IPsec, SSLTLS, DMVPN, FlexVPN)
4-4 WAN Optimization and Compression
4-5 WAN Security
4-6 Software-Defined WAN (SD-WAN)
5 Network Services
5-1 DNS and DHCP
5-2 Network Time Protocol (NTP)
5-3 Network File System (NFS) and Common Internet File System (CIFS)
5-4 Network Address Translation (NAT)
5-5 IP Multicast
5-6 Quality of Service (QoS)
5-7 Network Management Protocols (SNMP, NetFlow, sFlow)
5-8 Network Virtualization (VXLAN, NVGRE)
6 Security
6-1 Network Security Concepts
6-2 Firewall Technologies
6-3 Intrusion Detection and Prevention Systems (IDSIPS)
6-4 VPN Technologies (IPsec, SSLTLS)
6-5 Access Control Lists (ACLs)
6-6 Network Address Translation (NAT) and Port Address Translation (PAT)
6-7 Secure Shell (SSH) and Secure Copy (SCP)
6-8 Public Key Infrastructure (PKI)
6-9 Network Access Control (NAC)
6-10 Security Monitoring and Logging
7 Automation and Programmability
7-1 Network Programmability Concepts
7-2 RESTful APIs and NETCONFYANG
7-3 Python Scripting for Network Automation
7-4 Ansible for Network Automation
7-5 Cisco Model Driven Programmability (CLI, NETCONF, RESTCONF, gRPC)
7-6 Network Configuration Management (NCM)
7-7 Network Automation Tools (Cisco NSO, Ansible, Puppet, Chef)
7-8 Network Telemetry and Streaming Telemetry
8 Troubleshooting and Optimization
8-1 Network Troubleshooting Methodologies
8-2 Troubleshooting IP Routing Issues
8-3 Troubleshooting LAN Switching Issues
8-4 Troubleshooting WAN Connectivity Issues
8-5 Troubleshooting Network Services (DNS, DHCP, NTP)
8-6 Troubleshooting Network Security Issues
8-7 Performance Monitoring and Optimization
8-8 Network Traffic Analysis (Wireshark, tcpdump)
8-9 Network Change Management
9 Emerging Technologies
9-1 Software-Defined Networking (SDN)
9-2 Network Function Virtualization (NFV)
9-3 Intent-Based Networking (IBN)
9-4 5G Core Network
9-5 IoT Network Design and Management
9-6 Cloud Networking (AWS, Azure, Google Cloud)
9-7 Edge Computing
9-8 AI and Machine Learning in Networking
Network File System (NFS) and Common Internet File System (CIFS) Explained

Network File System (NFS) and Common Internet File System (CIFS) Explained

Key Concepts

Network File System (NFS)

NFS is a distributed file system protocol that allows a user on a client computer to access files over a network as if they were on the local storage. NFS operates on a client-server model, where the server exports file systems, and clients mount these file systems to access the shared files. NFS is commonly used in Unix-like operating systems and is known for its simplicity and efficiency.

Common Internet File System (CIFS)

CIFS is a network file sharing protocol that allows applications on a client computer to read and write to files and request services from server programs in a computer network. CIFS is an extended version of the Server Message Block (SMB) protocol and is primarily used in Windows environments. CIFS provides features such as authentication, file locking, and file caching to enhance file sharing capabilities.

File Sharing

File Sharing refers to the practice of making files available for other users to access over a network. Both NFS and CIFS enable file sharing by allowing clients to mount remote file systems and access shared files as if they were local. File sharing is essential for collaborative work environments, where multiple users need to access and modify the same files.

Client-Server Architecture

Client-Server Architecture is a computing model where the server provides services to multiple clients. In the context of NFS and CIFS, the server is responsible for exporting file systems, while clients mount these file systems to access shared files. This architecture allows for centralized management of files and resources, making it easier to maintain and secure shared data.

Protocols and Standards

Protocols and Standards define the rules and conventions for communication between devices on a network. NFS uses the NFS protocol, which is based on the Remote Procedure Call (RPC) mechanism. CIFS, on the other hand, uses the SMB protocol, which is designed for file sharing in Windows environments. Both protocols ensure that clients and servers can communicate effectively and securely.

Examples and Analogies

Consider a library where books are stored on shelves (server) and patrons (clients) can borrow and read these books. NFS is like a library system where patrons can access books from different sections (file systems) as if they were in their own personal library. CIFS is like a library system that not only allows patrons to borrow books but also provides additional services such as reserving books and checking out multiple books at once.

In a corporate environment, NFS can be used to share engineering design files across different departments, while CIFS can be used to share documents and presentations among team members. Both systems enable efficient collaboration and resource sharing, making it easier for users to access and manage shared files.