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Cisco 640-821 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Switching Fundamentals | - VLAN basics - LAN switching concepts |
| IP Addressing and Routing Basics | - Basic routing concepts - IPv4 addressing and subnetting |
| Networking Fundamentals | - OSI and TCP/IP models - Network types and components |
| Network Media and Topologies | - WAN technologies overview - Ethernet LAN technologies |
| Network Management and Troubleshooting | - Network monitoring basics - Basic troubleshooting techniques |
| Cisco IOS and Device Operation | - Cisco IOS navigation and commands - Basic device configuration |
Cisco Introduction to Cisco Networking Technologies Sample Questions:
An administrator issues the show ip interface s0/0 command and the output displays the line Serial0/0 is up, line protocol is upWhat does "line protocol is up" specifically indicate about the interface?
- A. The cable is attached properly.
- B. CDP has discovered the connected device.
- C. Keepalives are being received on the interface.
- D. A carrier detect signal has been received from the connected device.
- E. IP is correctly configured on the interface.
Correct Answer: C 🗳️
Which IP address is a private address?
- A. 172.20.14.36
- B. 172.33.194.30
- C. 192.169.42.34
- D. 168.172.19.39
- E. 12.0.0.1
Correct Answer: A 🗳️
A network administrator cannot get a router serial interface to become active. The administrator suspects that the problem may be the cable attached to the interface. The administrator is not at the same physical location as the router. Which Cisco IOS command allows the administrator to check the serial 0/0 cabling type?
- A. show interfaces serial 0/0
- B. show running-config
- C. show version
- D. show startup-config
- E. show controllers serial 0/0
Correct Answer: E 🗳️
Which command displays the status of the network layer protocols active on a router?
- A. show network protocols
- B. show version
- C. show stacks
- D. show flash
- E. show protocols
Correct Answer: E 🗳️
