Exam 200-125 CCNA

Skills Measured:

The following topics are general guidelines for the content likely to be included on the Cisco Certified Network Associate exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice.

Operation of IP Data Networks

Operation of IP Data Networks
Recognize the purpose and functions of various network devices such as Routers, Switches, Bridges and Hubs.
Select the components required to meet a given network specification.
Identify common applications and their impact on the network
Describe the purpose and basic operation of the protocols in the OSI and TCP/IP models.
Predict the data flow between two hosts across a network.
Identify the appropriate media, cables, ports, and connectors to connect Cisco network devices to other network devices and hosts in a LAN

LAN Switching Technologies

Determine the technology and media access control method for Ethernet networks
Identify basic switching concepts and the operation of Cisco switches.
- Collision Domains
- Broadcast Domains
- Types of switching
- CAM Table
Configure and verify initial switch configuration including remote access management.
- Cisco IOS commands to perform basic switch setup
Verify network status and switch operation using basic utilities such as ping, telnet and ssh.
Identify enhanced switching technologies
- RSTP
- PVSTP
- Ethercnannels
Describe how VLANs create logically separate networks and the need for routing between them.
- Explain network segmentation and basic traffic management concepts
Configure and verify VLANs
Configure and verify trunking on Cisco switches
- DTP
- Auto negotiation
Configure and verify PVSTP operation
- describe root bridge election
- spanning tree mode

IP addressing (IPv4 / IPv6)

Describe the operation and necessity of using private and public IP addresses for IPv4 addressing
Identify the appropriate IPv6 addressing scheme to satisfy addressing requirements in a LAN/WAN environment.
Identify the appropriate IPv4 addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.
Describe the technological requirements for running IPv6 in conjunction with IPv4 such as dual stack
Describe IPv6 addresses
- Global unicast
- Multicast
- Link local
- Unique local
- eui 64
- autoconfiguration

IP Routing Technologies

Describe basic routing concepts
- CEF
- Packet forwarding
- Router lookup process
Describe the boot process of Cisco IOS routers
- POST
- Router bootup process
Configure and verify utilizing the CLI to set basic Router configuration
- Cisco IOS commands to perform basic router setup
Configure and verify operation status of a device interface, both serial and ethernet
Verify router configuration and network connectivity
- Cisco IOS commands to review basic router information and network connectivity
Configure and verify routing configuration for a static or default route given specific routing requirements
Manage Cisco IOS Files
- Boot preferences
- Cisco IOS image(s)
- Licensing
  - Show license
  - Change license
Differentiate methods of routing and routing protocols
- Static vs. Dynamic
- Link state vs. Distance Vector
- Administrative distance
- split horizon
- metric
- next hop
- ip routing table
- Passive Interfaces
Configure and verify OSPF (single area)
- Benefit of single area
- neighbor adjacencies
- OSPF states
- Discuss Multi area
- Configure OSPF v2
- Configure OSPF v3
- Router ID
- Passive interface
- LSA types
Configure and verify EIGRP (single AS)
- Feasible Distance / Feasible Successors /Administrative distance
- Feasibility condition
- Metric composition
- Router ID
- Auto summary
- Path selection
- Load balancing
  - Equal
  - Unequal
- Passive interface
Configure and verify interVLAN routing (Router on a stick)
- sub interfaces
- upstream routing
- encapsulation
Configure SVI interfaces

IP Services

Configure and verify DHCP (IOS Router)
- configuring router interfaces to use DHCP
- DHCP options
- excluded addresses
- lease time
Describe the types, features, and applications of ACLs
- Standard
  - Sequence numbers
  - Editing
- Extended
- Named
- Numbered
- Log option
Configure and verify ACLs in a network environment
- Named
- Numbered
- Log option
Identify the basic operation of NAT
- Purpose
- Pool
- Static
- 1 to 1
- Overloading
- Source addressing
- One way NAT
Configure and verify NAT for given network requirements
Configure and verify NTP as a client
Recognize High availability (FHRP)
- VRRP
- HSRP
- GLBP
Configure and verify Syslog
- Utilize Syslog Output
Describe SNMP v2 & v3

Network Device Security

Configure and verify network device security features such as
- Device password security
- Enable secret vs enable
- Transport
- Disable telnet
- SSH
- VTYs
- Physical security
- Service password
- Describe external authentication methods
Configure and verify Switch Port Security features such as
- Sticky MAC
- MAC address limitation
- Static / dynamic
- Violation modes
  - Err disable
  - Shutdown
- Protect restrict
- Shutdown unused ports
- Err disable recovery
- Assign unused ports to an unused VLAN
- Setting native VLAN to other than VLAN 1
Configure and verify ACLs to filter network traffic
Configure and verify an ACLs to limit telnet and SSH access to the router

Troubleshooting

Identify and correct common network problems
Utilize netflow data
Troubleshoot and correct common problems associated with IP addressing and host configurations.
Troubleshootand Resolve VLAN problems
- identify that VLANs are configured
- port membership correct
- IP address configured
Troubleshoot and Resolve trunking problems on Cisco switches
- correct trunk states
- correct encapsulation configured
- correct vlans allowed
Troubleshoot and Resolve Spanning Tree operation issues
- root switch
- priority
- mode is correct
- port states
Troubleshoot and Resolve routing issues
- routing is enabled
- routing table is correct
- correct path selection
Troubleshoot and Resolve OSPF problems
- neighbor adjancies
- Hello and Dead timers
- OSPF area
- Interface MTU
- Network types
- Neighbor states
- OSPF topology database
Troubleshoot and Resolve EIGRP problems
- neighbor adjancies
- AS number
- Load balancing
- Split horizon
Troubleshoot and Resolve interVLAN routing problems
- Connectivity
- Encapsulation
- Subnet
- Native VLAN
- Port mode trunk status
Troubleshoot and Resolve ACL issues
- Statistics
- Permitted networks
- Direction
  - Interface
Troubleshoot and Resolve WAN implementation issues
- Serial interfaces
- PPP
- Frame relay
Troubleshoot and Resolve Layer 1 problems
- Framing
- CRC
- Runts
- Giants
- Dropped packets
- Late collision
- Input / Output errors
Monitor NetFlow statistics
Troubleshoot etherchannel problems

WAN Technologies

Identify different WAN Technologies
- Metro Ethernet
- VSAT
- Cellular 3G / 4G
- MPLS
- T1 / E1
- ISDN
- DSL
- Frame relay
- Cable
- VPN
Configure and verify a basic WAN serial connection
Configure and verify a PPP connection between Cisco routers
Configure and verify Frame Relay on Cisco routers
Implement and troubleshoot PPPoE