Cisco 640-802 Actual Free Exam Questions & Community Discussion

  • Exam Code/Number: 640-802
  • Exam Name/Title: Cisco Certified Network Associate(CCNA)
  • Certification Provider: Cisco
  • Corresponding Certification: CCNA
  • Exam Questions: 653
  • Updated On: May 27, 2026
What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?
Correct Answer: B Vote an answer
Which protocol provides a method of sharing VLAN configuration information between two Cisco switches?
Correct Answer: A Vote an answer
Refer to Exhibit:

Based on the network shown in the graphic which option contains both the potential networking problem and the protocol or setting that should be used to prevent the problem?
Correct Answer: C Vote an answer
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A network administrator issues the ping 192.168.2.5 command and successfully tests connectivity to a host that has been newly connected to the network. Which protocols were used during the test? (Choose two.)
Correct Answer: C,D Vote an answer
According to capabilities of WPA security, which encryption type does WPA2 use?
Correct Answer: D Vote an answer
Refer to the exhibit. The network administrator must establish a route by which London workstations can forward traffic to the Manchester workstations. What is the simplest way to accomplish this?
Correct Answer: A Vote an answer


Please study the exhibit shown above carefully, and answer the following question. Which connection user the default encapsulation for serial interfaces on Cisco routers?
Correct Answer: D Vote an answer
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Refer to the exhibit.

What is the result of setting the no login command?
Correct Answer: B Vote an answer
Refer to the exhibit A frame on vlan 1on switch s1 is sent to switch s2 when the frame is received on vlan 2, what causes this behavior?

Correct Answer: A Vote an answer
Which two statements describe the advantages to the use of RIP over the use of OSPF? (Choose two.)
Correct Answer: C,E Vote an answer
Which spread spectrum technology does the 802.11b standard define for operation?
Correct Answer: E Vote an answer
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Refer to the exhibit. Each of these four switches has been configured with a hostname, as well as being configured to run RSTP. No other configuration changes have been made. Which three of these show the correct RSTP port roles for the indicated switches and interfaces? (Choose three.)
Correct Answer: B,C,D Vote an answer
Which of the following describes the roles of devices in a WAN? (Choose three.)
Correct Answer: B,E,F Vote an answer
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Refer to the exhibit. A junior network administrator was given the task of configuring port security on SwitchA to allow only PC_A to access the switched network through port fa0/1. If any other device is detected, the port is to drop frames from this device. The administrator configured the interface and tested it with successful pings from PC_A to RouterA, and then observes the output from these two show commands.

Which two of these changes are necessary for SwitchA to meet the requirements? (Choose two.)
Correct Answer: C,E Vote an answer
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