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Cisco 642-384 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Network Device Configuration | - Switching configuration
|
| Network Services and Protocols | - Transport and application protocols
|
| Troubleshooting and Operations | - Basic monitoring and maintenance
|
| Network Infrastructure Fundamentals | - IP addressing and routing basics
|
Cisco Express Foundation Field Specialist Sample Questions:
Which three elements can you review when examining the traffic across a network? (Choose three.)
- A. connections
- B. mainframe
- C. states
- D. VPN connection
- E. firewalls
- F. ACLs
- G. packet flows
Correct Answer: A,C,G 🗳️
What should you do first when selecting the appropriate antenna for a wireless deployment?
- A. Determine the direction of the coverage.
- B. Determine the shape of the area to be covered.
- C. Determine the frequency of the radio.
- D. Determine the location of the access point.
Correct Answer: C 🗳️
When troubleshooting poor network performance, which two symptoms would typically be associated with a network layer problem? (Choose two.)
- A. There are excessive CRC errors.
- B. Packet loss is more than 30 percent.
- C. There is excessive broadcast traffic.
- D. ARP requests are timing out.
- E. Pings succeed only part of the time.
- F. Slips are detected on WAN interfaces.
Correct Answer: B,E 🗳️
After configuring VTP, you no longer receive updates as expected. Which command can you use to verify the number of VTP advertisements being transmitted?
- A. show vtp counters
- B. show vtp status
- C. show vtp database
- D. show vtp statistics
Correct Answer: A 🗳️
Refer to the exhibit.
Switches A and C are running PVST+ STP, and Switch B is running 802.1Q STP. If the BPDU of the root in VLAN 1 is better than the BPDU of the root in VLAN 2, then there is no blocking port in the VLAN 2 topology. The BPDU of VLAN 2 never makes a "full circle" around the topology; it is replaced by the VLAN 1 BPDU on the B-C link, because B runs only one STP merged with VLAN 1 STP of PVST+. Thus, there is a forwarding loop.
What does PVST+ do to correct this?
- A. Switch A sends PVST+ BPDUs of VLAN 2 (to the SSTP address that is flooded by Switch B) towards Switch C. Switch C will put port C-B into a type-inconsistent state, which prevents the loop.
- B. Switch C sends PVST+ BPDUs of VLAN 2 (to the SSTP address that is flooded by Switch B) towards Switch Switch A will put port C-B into a type-inconsistent state, which prevents the loop.
- C. Switch B sends PVST+ BPDUs of VLAN 1 (to the SSTP address that is flooded by Switch A) towards Switch C. Switch C will put port C-B into a type-inconsistent state, which prevents the loop.
- D. Switch A sends PVST+ BPDUs of VLAN 1 (to the SSTP address that is flooded by Switch B) towards Switch B. Switch A will put port C-B into a type-inconsistent state, which prevents the loop.
Correct Answer: A 🗳️
