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Instant Download Cisco : 640-821 Questions & Answers as PDF & Test Engine
- Exam Code: 640-821
- Exam Name: Introduction to Cisco Networking Technologies
- Updated: Nov 02, 2026
- No. of Questions: 91 Questions and Answers
- Download Limit: Unlimited
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In 2026, a good test engine is a study partner, not just a quiz file: it tracks your performance, flags your mistakes, and lets you clear the questions you have already mastered. Lead2Passed builds exactly that into the 640-821 practice package with 91 verified questions.
Cisco 640-821 Exam Overview:
| Certification Vendor: | Cisco |
|---|---|
| Exam Name: | Introduction to Cisco Networking Technologies (INTRO) |
| Exam Number: | 640-821 |
| Related Certifications: | 640-801 CCNA Composite CCNA Routing and Switching 640-811 ICND |
| Certificate Validity Period: | 3 years (retired exam) |
| Passing Score: | 867 / 1000 |
| Exam Price: | USD 100-125 |
| Exam Format: | Multiple Choice Multiple Answer, Multiple Choice Single Answer, Drag and Drop, Simulations |
| Exam Duration: | 60-90 |
| Real Exam Qty: | 50-65 |
| Available Languages: | Japanese, English, Spanish |
| Recommended Training: | INTRO Course (Retired) |
| Exam Registration: | Cisco Retired Exams List Pearson VUE (historical) |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | In-person proctored at Pearson VUE test centers; retired exam no longer available |
| Pre Condition: | No formal prerequisites; first exam in two-exam CCNA path, paired with 640-811 |
| Official Syllabus URL: | https://www.cisco.com/c/en/us/training-events/training-certifications/exams/retired.html |
Cisco 640-821 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Switching Fundamentals | 15% | - Switch operation and port configuration - LAN switching concepts - VLAN basics and configuration |
| Routing and WAN Basics | 15% | - Static and dynamic routing principles - Routing table overview - Basic network troubleshooting - Common WAN technologies |
| Network Fundamentals | 25% | - OSI and TCP/IP model layers - Network types: LAN, WAN, WLAN - Network components: routers, switches, hubs, cables - Ethernet standards and operation |
| IP Addressing and Subnetting | 25% | - ARP, ICMP, and DHCP operation - IPv4 addressing and classes - Subnetting and VLSM - Private vs public IP addressing |
| Cisco IOS Basics | 20% | - Initial device configuration - Password and security basics - Managing configuration files - IOS navigation and command-line interface |
How Our Cisco Introduction to Cisco Networking Technologies Study Material Works
The test engine simulates the real exam environment, records your performance after each session, and points out the questions you got wrong so you know where to concentrate. Once you answer a question correctly consistently, you can mark it as mastered and clear it from your rotation, keeping every practice round focused on what still needs work.
The Cisco Introduction to Cisco Networking Technologies exam contains 50-65 questions, and you will have 60-90 minutes to complete them. Simulating that combination in advance turns exam-day pacing into a habit.
More than you might think. A demo shows you real questions and answers exactly as the full product presents them, so you can judge the accuracy, the writing quality, and the interface for yourself. We encourage you to compare our demo against any other provider's — the difference in care is visible in the details.
Many candidates combine practice questions with official training. Recommended options include:
This package includes 91 practice questions for the Cisco Introduction to Cisco Networking Technologies exam. Every answer is verified by an experienced team of experts, so you can trust what you study.
The Cisco Introduction to Cisco Networking Technologies exam requires a score of 867 / 1000 to pass, and the official registration fee is USD 100-125. Knowing both figures before you begin helps you plan your preparation realistically.
You can register for the Cisco Introduction to Cisco Networking Technologies exam through the official channels:
No formal prerequisites; first exam in two-exam CCNA path, paired with 640-811
You can confirm the current eligibility requirements on the official 640-821 exam page before you register.
The Cisco Introduction to Cisco Networking Technologies practice questions are organized around the official exam objectives. Key topics include:
- Cisco IOS Basics (20%)
- Network Fundamentals (25%)
- Switching Fundamentals (15%)
Your practice results against these topics show you exactly where to spend your next session.
Cisco Introduction to Cisco Networking Technologies Sample Questions:
lab
Correct Answer:
Shore(config)# interface eth0
Shore(config-if)# ip address 192.168.195.113 255.255.255.240
Shore(config-if)# no shutdown
Shore(config-if)# exit
Shore(config)# interface ser0
Shore(config-if)# ip address 192.168.195.33 255.255.255.240
Shore(config-if)# no shutdown
Shore(config-if)# exit
Shore(config)# router rip
Shore(config-router)# network 192.168.195.0
Shore(config-router)# end
Shore# copy run start
Refer to the exhibit. HostB is sending a file to HostA. B represents the frame as it leaves the Oshawa router. What is the Layer 2 destination address of the frame at this point?
- A. abcd.4444.0012
- B. abcd.1123.0045
- C. abcd.2246.0035
- D. abcd.1234.5678
- E. aabb.5555.2222
Correct Answer: A 🗳️
Which three statements are true about the operation of a full-duplex Ethernet network?
(Choose three.)
- A. A dedicated switch port is required for each full-duplex node.
- B. Ethernet hub ports are preconfigured for full-duplex mode.
- C. The host network card and the switch port must be capable of operating in full-duplex mode.
- D. There are no collisions in full-duplex mode.
- E. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.
Correct Answer: A,C,D 🗳️
Refer to the graphic. A network administrator is having trouble with a serial interface and has attempted to view its status with a show command as shown in the graphic. Why was the error message displayed?
- A. The status of serial interfaces cannot be viewed with a show command.
- B. Part of the command is missing.
- C. The command cannot be entered in this router mode.
- D. The interface designation must be typed as "s0/0".
- E. There is no serial 0/0 interface on the router.
Correct Answer: B 🗳️
A network administrator is having trouble with a remote router. The administrator connects to the router by Telnet and types a debug command, but no debug output appears on the screen. What command should the administrator type to view the debug output?
- A. Router# show debug
- B. Router# no debug *
- C. Router# debug all
- D. Router# enable debug
- E. Router# terminal monitor
Correct Answer: E 🗳️
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