Free 648-385: Cisco Express Foundation for Field Engineers Exam Questions and Answers
Cisco Express Foundation for Field Engineers is exam 648-385, part of Cisco certifications. In Cisco's current scheme the first digit gives the level: 100 is entry, 200 associate, 300 the CCNP concentration exams, 350 the CCNP core exams that also qualify you for CCIE, 500 specialist and 700 the unproctored sales exams. Older codes such as 400-, 640- and 642- predate the February 2020 restructure, when every CCNA track was collapsed into one exam and CCNP moved to a core-plus-concentration model.
Candidates comparing 648-385 exam dumps, ExamTopics and other 648-385 practice tests use this page for the answers and explanations behind each question. Download the free 648-385 PDF, then sit the timed 648-385 exam simulation before booking with Cisco.
Last updated: October 22, 2026
- Exam code
- 648-385
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- Cisco
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- 1000+
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- First 10, with answers
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- 130 mins · 70%
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Question #1
A field engineer is installing a switch for a branch office. A workstation on the network is assigned the address 172.16.35.130/26. What is the network address of the subnet that contains this workstation?
Correct answer: C
Explanation
A /26 mask leaves 6 host bits, so subnets in the fourth octet increment by 64 (0, 64, 128, 192). The value 130 falls between 128 and 191, so the network address is 172.16.35.128. The address 172.16.35.191 is the broadcast address of this subnet, and 172.16.35.192 starts the next subnet.
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Question #2
Which multicast address is used by OSPF to reach all OSPF routers on a broadcast network segment?
Correct answer: B
Explanation
OSPF sends hello and other packets to 224.0.0.5 (AllSPFRouters). The address 224.0.0.6 is used for the DR and BDR. 224.0.0.9 is used by RIPv2 and 224.0.0.10 by EIGRP, which are common mix-ups.
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Question #3
Refer to the exhibit. Switch1# show running-config interface FastEthernet0/5 ! interface FastEthernet0/5 switchport mode access switchport port-security switchport port-security maximum 2 switchport port-security violation restrict switchport port-security mac-address sticky ! Two MAC addresses have already been learned on FastEthernet0/5. A third device is then connected through an unmanaged hub on the same port. Which two statements are true? (Choose two.)
Select 2 answers.
Correct answer: A, C
Explanation
With the restrict violation mode, frames from unauthorized sources are dropped and a log message and counter are generated, while the port stays up for the permitted devices. Sticky learning adds the learned addresses to the running configuration only, so they must be saved with copy running-config startup-config to survive a reload. Err-disable behavior belongs to the default shutdown mode.
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Question #4
Clients in VLAN 20 (10.20.20.0/24) cannot obtain addresses. The only DHCP server is at 10.1.1.50 on a different subnet, and the router interface for VLAN 20 is the default gateway for those clients. Which configuration on that router interface allows the clients to receive addresses from the server?
Correct answer: D
Explanation
DHCP discover messages are broadcasts that a router does not forward. The ip helper-address command on the client-facing interface converts them to unicast and relays them to the server at 10.1.1.50. The other commands are valid DHCP-related commands, but they either make the interface a client, reserve addresses, or create a local pool, and none relays requests to a remote server.
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Question #5
Refer to the exhibit. Router1# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.10.1 YES manual up up Serial0/0/0 10.1.1.1 YES manual up down Serial0/0/0 connects to a router at a remote site. Which condition is the most likely cause of the status shown for Serial0/0/0?
Correct answer: C
Explanation
A status of up with a protocol of down means the physical layer is working but the data link layer is failing, which is typical of mismatched encapsulation such as HDLC on one end and PPP on the other. A disconnected cable would show the status as down, and a shut interface would show administratively down. An IP subnet mismatch is a Layer 3 problem and does not bring down the line protocol.
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Question #6
Which TCP port does SSH use by default for remote management of a Cisco device?
Correct answer: A
Explanation
SSH listens on TCP port 22 by default and encrypts the whole management session. Port 23 is Telnet, which also gives remote CLI access but sends data, including passwords, in clear text, so it is the most common mix-up. Port 25 is SMTP and port 443 is HTTPS.
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Question #7
What is the primary function of a router in a network?
Correct answer: A
Explanation
Routers are primarily used to forward data packets between different networks and manage traffic.
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Question #8
In what scenario would you typically use a DHCP server?
Correct answer: C
Explanation
A DHCP server is used for dynamic IP address allocation to devices on a local area network (LAN).
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Question #9
When configuring a switch VLAN, which command is used to assign a port to a specific VLAN?
Correct answer: C
Explanation
The command "switchport access vlan " is used to assign a port to a specific VLAN on a switch.
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Question #10
What is the common default administrative distance for OSPF?
Correct answer: A
Explanation
The common default administrative distance for OSPF (Open Shortest Path First) is 110.
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Discussion
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FAQ
Learn More: https://www.cisco.com/site/us/en/learn/training-certifications/certifications/index.html
- Q1: What is the 648-385: Cisco Express Foundation for Field Engineers exam?
- A: 648-385: Cisco Express Foundation for Field Engineers is a Cisco certification exam. Judging by the questions in our bank, it concentrates on vlan, switch, router, networking and vlans.
- Q2: What topics does the 648-385: Cisco Express Foundation for Field Engineers exam cover?
- A: Questions in our 648-385: Cisco Express Foundation for Field Engineers bank cluster around vlan, switch, router, networking, vlans, cisco, wireless and routing. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for 648-385: Cisco Express Foundation for Field Engineers?
- A: Work through the 648-385: Cisco Express Foundation for Field Engineers practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real 648-385: Cisco Express Foundation for Field Engineers exam questions?
- A: They are drawn from officially released past questions and from community members who have sat 648-385: Cisco Express Foundation for Field Engineers. Answers are verified and updated weekly.
- Q5: Where do I register for the 648-385: Cisco Express Foundation for Field Engineers exam?
- A: Register through Cisco directly at https://www.cisco.com/site/us/en/learn/training-certifications/certifications/index.html. Exampractice is not affiliated with Cisco and does not administer the exam.
- Q6: Is there a free 648-385: Cisco Express Foundation for Field Engineers sample?
- A: Yes. Every 648-385: Cisco Express Foundation for Field Engineers page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
- Q7: What are Cisco Certification Exams?
- A: Cisco Certification Exams validate your expertise in using and managing Cisco networking and IT solutions. These certifications demonstrate your proficiency in designing, implementing, and troubleshooting Cisco-based networks and systems, covering areas such as routing and switching, security, wireless, data center, and collaboration.
- Q8: Why should I pursue Cisco Certification?
- A: Cisco Certification enhances your professional credibility, showcasing your skills and knowledge in Cisco technologies. This can lead to better job opportunities, higher salaries, and career advancement in networking and IT industries.
- Q9: What are the benefits of Cisco Certification?
- A: Benefits include recognition as a certified networking professional, improved job performance, access to exclusive resources, continuing education opportunities, and staying current with the latest Cisco technologies and best practices.
- Q10: Who should take Cisco Certification Exams?
- A: Network engineers, system administrators, IT professionals, and anyone involved in designing, implementing, and managing network solutions using Cisco products should consider these certifications to validate their expertise and advance their careers.
- Q11: What types of Cisco Certification Exams are available?
- A: Cisco offers various certification paths, including:
- Q12: How do I prepare for Cisco Certification Exams?
- A: Preparation can include official Cisco training courses, study guides, practice exams, online tutorials, and hands-on experience with Cisco networking equipment and solutions.
- Q13: Where can I take Cisco Certification Exams?
- A: Cisco Certification Exams can be taken at authorized Pearson VUE testing centers worldwide or online, providing flexibility to fit your schedule and location.
- Q14: How do Cisco Certifications impact my career?
- A: Cisco Certifications significantly boost your career by demonstrating your expertise to employers, making you a more competitive candidate for advanced roles and promotions in networking and IT.
- Q15: Are there any prerequisites for Cisco Certification Exams?
- A: Some exams may have prerequisites, such as foundational knowledge or prior certifications. Check the specific requirements for each certification path on the Cisco website.
- Q16: How often do I need to recertify for Cisco Certifications?
- A: Cisco Certifications typically require recertification every three years to ensure that certified professionals stay updated with the latest networking technologies and industry practices.



