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Cisco 640-821 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Introduction to Cisco Networking Technologies |
| Exam Number: | 640-821 |
| Exam Format: | Multiple Choice, Simulation |
| Available Languages: | English |
| Related Certifications: | Cisco CCNA (two-exam option) |
| Sample Questions: | Cisco 640-821 Sample Questions |
| Exam Way: | Onsite at Pearson VUE (historical practice for Cisco exams) |
| Pre Condition: | None formally published; designed as introductory exam before CCNA or as part of CCNA two-exam path. :contentReference[oaicite:0]{index=0} |
Cisco 640-821 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Networking Fundamentals | - OSI and TCP/IP models - Network types and components |
| Network Media and Topologies | - WAN technologies overview - Ethernet LAN technologies |
| Switching Fundamentals | - VLAN basics - LAN switching concepts |
| IP Addressing and Routing Basics | - IPv4 addressing and subnetting - Basic routing concepts |
| Network Management and Troubleshooting | - Network monitoring basics - Basic troubleshooting techniques |
| Cisco IOS and Device Operation | - Basic device configuration - Cisco IOS navigation and commands |
Cisco Introduction to Cisco Networking Technologies Sample Questions:
Question #1
What is ROM Monitor (ROMMON)?
- A. a memory component for storing the saved configuration file
- B. an operating system used for hardware troubleshooting and for password recovery
- C. the source of the primary Cisco IOS software image
- D. a memory management tool
- E. temporary storage space for the router operating files
Correct Answer: B 🗳️
Question #2
What will cause a router to enter setup mode? (Choose two.)
- A. The IOS is corrupt.
- B. The setup command was issued from the privileged mode prompt.
- C. The configuration file is missing in NVRAM.
- D. The configuration register is set to 0x2100.
- E. The IOS is missing.
- F. Boot system commands are misconfigured in the running-configuration.
Correct Answer: B,C 🗳️
Question #3
Refer to the exhibit. Why was this message received?
- A. No VTY password has been set.
- B. The login command has not been set on CON 0.
- C. No enable password has been set.
- D. The login command has not been set on the VTY ports.
- E. No console password has been set.
- F. No enable secret password has been set.
Correct Answer: A 🗳️
Question #4
Refer to the output of the three router commands shown in the exhibit.A new technician has been told to add a new LAN to the company router. Why has the technician received the error message that is shown following the last command?
- A. The command was entered from the wrong prompt.
- B. The interface type does not exist on this router platform.
- C. The IOS software loaded on the router is outdated.
- D. The interface was already configured.
- E. The router does not support LAN interfaces that use Ethernet.
Correct Answer: B 🗳️
Question #5
Which Layer 4 protocol is used for a Telnet connection?
- A. TCP
- B. DNS
- C. IP
- D. ICMP
- E. UDP
Correct Answer: A 🗳️
By Gerald
