Cisco CCIE Security Written Exam (v5.0) : 400-251
Exam Code: 400-251
Exam Name: CCIE Security Written Exam (v5.0)
Updated: May 29, 2026
Q & A: 125 Questions and Answers
400-251 Free Demo download
About Cisco 400-251 Exam
ITexamReview is a useful and valid platform to provide you with an array of 400-251 exam questions & answers. Due to the high-quality and best-valid CCIE Security Written Exam (v5.0) exam torrent, it has attracted about 100000+ candidates to choose the exam dumps for CCIE Security Written Exam (v5.0) certification. It goes without saying that the CCIE Security Written Exam (v5.0) certification has played an important role in the IT industry and deeply affected the lifestyle of people. So far, there are countless people struggling to gain the 400-251 exam credential with a variety of ways. Now, the problem they face may be where to find the resource of CCIE Security Written Exam (v5.0) exam test and how to confirm the validity and accuracy of CCIE Security Written Exam (v5.0) exam torrent.
Cisco 400-251 Exam Certification Details:
| Exam Price | $450 USD |
| Sample Questions | Cisco 400-251 Sample Questions |
| Passing Score | Variable (750-850 / 1000 Approx.) |
| Number of Questions | 90-110 |
| Exam Code | 400-251 CCIE S |
| Exam Registration | PEARSON VUE |
| Exam Name | CCIE Security Written Exam |
| Duration | 120 minutes |
Most accurate dumps with good feedback
When you visit this page, your worries will be relieved to some extent. Here are the comprehensive and most-accurate CCIE Security Written Exam (v5.0) exam dumps for you to choose. The questions and answers in CCIE Security Written Exam (v5.0) exam cram are highly selective, some of which mirror the actual exam. The quality and quantities of 400-251 exam dumps are strictly controlled which will bring the candidates the best and perfect experiences. The expertise of Cisco CCIE Security Written Exam (v5.0) exam torrent is without any doubts. All the core works are done by the professional experts with decades of IT hands-on experience. With constantly endeavor and dedicated spirits, they are doing their best to help IT candidates optimize their IT technology by providing convenient, high quality CCIE Security 400-251 exam dumps they can rely on. The CCIE Security Written Exam (v5.0) exam dumps you find on our site are the latest and refined from the current pool of questions, so you don't worry the old information.
When you decide to buy the CCIE Security Written Exam (v5.0) exam dumps, you may still have some doubts and confusion. According to the data estimates, an astonishing 93% of the customers check reviews before consumption. Actually, we should deal with the reviews of 400-251 exam dumps rationally. After all, the feedback is sometimes the subjective idea but it still has some effects on your decision. When it comes to CCIE Security Written Exam (v5.0) exam questions &answers, the feedbacks from the customers are all positive and useful. You can find 400-251 exam reviews on our site. Some reviews praise for great exam result with the help of the CCIE Security Written Exam (v5.0) exam cram. Some people say our 400-251 test engine is interesting and useful. Moreover, you will happy that someone shares their exam experience in actual test. Besides, you can pay attention to the dates of the CCIE Security Written Exam (v5.0) exam reviews, the time can tell you the candidates attend the actual exam recently, and the information is newest and can ensure you 100% pass. In addition, if you have some questions about CCIE Security CCIE Security Written Exam (v5.0) exam dumps, you can leave a message through the feedback, we will solve your confusion as soon as possible. Sometimes, there is still someone complaining on the feedback because our customer services are too good so that they are surprised. Actually, we take the CCIE Security Written Exam (v5.0) IT candidates not just as the customer but a friend. We hope you achieve your goals with the help of CCIE Security Written Exam (v5.0) exam dumps.
Cisco 400-251 Exam Topics:
| Section | Weight Written | Weight Lab | Objectives |
|---|---|---|---|
| Advanced Threat Protection and Content Security | 17% | 19% | 1 Compare and contrast different AMP solutions including public and private cloud deployment models 2 Describe, implement, and troubleshoot AMP for networks, AMP for endpoints, and AMP for content security (CWS, ESA, and WSA) 3 Detect, analyze, and mitigate malware incidents 4 Describe the benefit of threat intelligence provided by AMP Threat GRID 5 Perform packet capture and analysis using Wireshark, tcpdump, SPAN, and RSPAN 6 Describe, implement, and troubleshoot web filtering, user identification, and Application Visibility and Control (AVC) 7 Describe, implement, and troubleshoot mail policies, DLP, email quarantines, and SenderBase on ESA 8 Describe, implement, and troubleshoot SMTP authentication such as SPF and DKIM on ESA 9 Describe, implement, and troubleshoot SMTP encryption on ESA 10 Compare and contrast different LDAP query types on ESA 11 Describe, implement, and troubleshoot WCCP redirection 12 Compare and contrast different proxy methods such as SOCKS, Auto proxy/WPAD, and transparent 13 Describe, implement, and troubleshoot HTTPS decryption and DLP 14 Describe, implement, and troubleshoot CWS connectors on Cisco IOS routers, Cisco ASA, Cisco AnyConnect, and WSA 15 Describe the security benefits of leveraging the OpenDNS solution. 16 Describe, implement, and troubleshoot SMA for centralized content security management 17 Describe the security benefits of leveraging Lancope |
| Evolving Technologies v1.1 | 10% | N/A | 1 Cloud a) Compare and contrast Cloud deployment models a) [i] Infrastructure, platform, and software services (XaaS) a) [ii] Performance and reliability a) [iii] Security and privacy a) [iv] Scalability and interoperability b) Describe Cloud implementations and operations b) [i] Automation and orchestration b) [ii] Workload mobility b) [iii] Troubleshooting and management b) [iv] OpenStack components 2 Network Programmability (SDN) a) Describe functional elements of network programmability (SDN) and how they interact a) [i] Controllers a) [ii] APIs a) [iii] Scripting a) [iv] Agents a) [v] Northbound vs. Southbound protocols b) Describe aspects of virtualization and automation in network environments b) [i] DevOps methodologies, tools and workflows b) [ii] Network/application function virtualization (NFV, AFV) b) [iii] Service function chaining b) [iv] Performance, availability, and scaling considerations 3 Internet of Things (IoT) a) Describe architectural framework and deployment considerations for Internet of Things a) [i] Performance, reliability and scalability a) [ii] Mobility a) [iii] Security and privacy a) [iv] Standards and compliance a) [v] Migration a) [vi] Environmental impacts on the network |
| Infrastructure Security, Virtualization, and Automation | 13% | 15% | 1 Identify common attacks such as Smurf, VLAN hopping, and SYNful knock, and their mitigation techniques 2 Describe, implement, and troubleshoot device hardening techniques and control plane protection methods, such as CoPP and IP Source routing. 3 Describe, implement, and troubleshoot management plane protection techniques such as CPU and memory thresholding and securing device access 4 Describe, implement, and troubleshoot data plane protection techniques such as iACLs, uRPF, QoS, and RTBH 5 Describe, implement, and troubleshoot IPv4/v6 routing protocols security 6 Describe, implement, and troubleshoot Layer 2 security techniques such as DAI, IPDT, STP security, port security, DHCP snooping, and VACL 7 Describe, implement, and troubleshoot wireless security technologies such as WPA, WPA2, TKIP, and AES 8 Describe wireless security concepts such as FLEX Connect, wIPS, ANCHOR, Rogue AP, and Management Frame Protection (MFP) 9 Describe, implement, and troubleshoot monitoring protocols such as NETFLOW/IPFIX, SNMP, SYSLOG, RMON, NSEL, and eSTREAMER 10 Describe the functions and security implications of application protocols such as SSH, TELNET, TFTP, HTTP/HTTPS, SCP, SFTP/FTP, PGP, DNS/DNSSEC, NTP, and DHCP 11 Describe the functions and security implications of network protocols such as VTP, 802.1Q, TCP/UDP, CDP, LACP/PAgP, BGP, EIGRP, OSPF/OSPFv3, RIP/RIPng, IGMP/CGMP, PIM, IPv6, and WCCP 12 Describe the benefits of virtualizing security functions in the data center using ASAv, WSAv, ESAv, and NGIPSv 13 Describe the security principles of ACI such as object models, endpoint groups, policy enforcement, application network profiles, and contracts 14 Describe the northbound and southbound APIs of SDN controllers such as APIC-EM 15 Identify and implement security features to comply with organizational security policies, procedures, and standards such as BCP 38, ISO 27001, RFC 827, and PCI-DSS 16 Describe and identify key threats to different places in the network (campus, data center, core, edge) as described in Cisco SAFE 17 Validate network security design for adherence to Cisco SAFE recommended practices 18 Interpret basic scripts that can retrieve and send data using RESTful API calls in scripting languages such as Python 19 Describe Cisco Digital Network Architecture (DNA) principles and components. |
| Secure Connectivity and Segmentation | 17% | 19% | 1 Compare and contrast cryptographic and hash algorithms such as AES, DES, 3DES, ECC, SHA, and MD5 2 Compare and contrast security protocols such as ISAKMP/IKEv1, IKEv2, SSL, TLS/DTLS, ESP, AH, SAP, and MKA 3 Describe, implementc and troubleshoot remote access VPN using technologies such as FLEXVPN, SSL-VPN between Cisco firewalls, routers, and end hosts 4 Describe, implement, and troubleshoot the Cisco IOS CA for VPN authentication 5 Describe, implement, and troubleshoot clientless SSL VPN technologies with DAP and smart tunnels on Cisco ASA and Cisco FTD 6 Describe, implement, and troubleshoot site-to-site VPNs such as GETVPN, DMVPN and IPsec 7 Describe, implement, and troubleshoot uplink and downlink MACsec (802.1AE) 8 Describe, implement, and troubleshoot VPN high availability using Cisco ASA VPN clustering and dual-hub DMVPN deployments 9 Describe the functions and security implications of cryptographic protocols such as AES, DES, 3DES, ECC, SHA, MD5, ISAKMP/IKEv1, IKEv2, SSL, TLS/DTLS, ESP, AH, SAP, MKA, RSA, SCEP/EST, GDOI, X.509, WPA, WPA2, WEP, and TKIP 10 Describe the security benefits of network segmentation and isolation 11 Describe, implement, and troubleshoot VRF-Lite and VRF-Aware VPN 12 Describe, implement, and troubleshoot microsegmentation with TrustSec using SGT and SXP 13 Describe, implement, and troubleshoot infrastructure segmentation methods such as VLAN, PVLAN, and GRE 14 Describe the functionality of Cisco VSG used to secure virtual environments 15 Describe the security benefits of data center segmentation using ACI, EVPN, VXLAN, and NVGRE |
| Identity Management, Information Exchange, and Access Control | 22% | 24% | 1 Describe, implement, and troubleshoot various personas of ISE in a multinode deployment 2 Describe, implement, and troubleshoot network access device (NAD), ISE, and ACS configuration for AAA 3 Describe, implement, and troubleshoot AAA for administrative access to Cisco network devices using ISE and ACS 4 Describe, implement, verify, and troubleshoot AAA for network access with 802.1X and MAB using ISE. 5 Describe, implement, verify, and troubleshoot cut-through proxy/auth-proxy using ISE as the AAA server 6 Describe, implement, verify, and troubleshoot guest life cycle management using ISE and Cisco network infrastructure 7 Describe, implement, verify, and troubleshoot BYOD on-boarding and network access flows with an internal or external CA 8 Describe, implement, verify, and troubleshoot ISE and ACS integration with external identity sources such as LDAP, AD, and external RADIUS 9 Describe ISE and ACS integration with external identity sources such as RADIUS Token, RSA SecurID, and SAML 10 Describe, implement, verify, and troubleshoot provisioning of AnyConnect with ISE and ASA 11 Describe, implement, verify, and troubleshoot posture assessment with ISE 12 Describe, implement, verify, and troubleshoot endpoint profiling using ISE and Cisco network infrastructure including device sensor 13 Describe, implement, verify, and troubleshoot integration of MDM with ISE 14 Describe, implement, verify, and troubleshoot certificate based authentication using ISE 15 Describe, implement, verify, and troubleshoot authentication methods such as EAPChaining and Machine Access Restriction (MAR) 16 Describe the functions and security implications of AAA protocols such as RADIUS, TACACS+, LDAP/LDAPS, EAP (EAP-PEAP, EAP-TLS, EAP-TTLS, EAP-FAST, EAP-TEAP, EAP- MD5, EAP-GTC), PAP, CHAP, and MS-CHAPv2 17 Describe, implement, and troubleshoot identity mapping on ASA, ISE, WSA and FirePOWER 18 Describe, implement, and troubleshoot pxGrid between security devices such as WSA, ISE, and Cisco FMC |
| Perimeter Security and Intrusion Prevention | 21% | 23% | 1 Describe, implement, and troubleshoot HA features on Cisco ASA and Cisco FirePOWER Threat Defense (FTD) 2 Describe, implement, and troubleshoot clustering on Cisco ASA and Cisco FTD 3 Describe, implement, troubleshoot, and secure routing protocols on Cisco ASA and Cisco FTD 4 Describe, implement, and troubleshoot different deployment modes such as routed, transparent, single, and multicontext on Cisco ASA and Cisco FTD 5 Describe, implement, and troubleshoot firewall features such as NAT (v4,v6), PAT, application inspection, traffic zones, policy-based routing, traffic redirection to service modules, and identity firewall on Cisco ASA and Cisco FTD 6 Describe, implement, and troubleshoot IOS security features such as Zone-Based Firewall (ZBF), application layer inspection, NAT (v4,v6), PAT and TCP intercept on Cisco IOS/IOS-XE 7 Describe, implement, optimize, and troubleshoot policies and rules for traffic control on Cisco ASA, Cisco FirePOWER and Cisco FTD 8 Describe, implement, and troubleshoot Cisco Firepower Management Center (FMC) features such as alerting, logging, and reporting 9 Describe, implement, and troubleshoot correlation and remediation rules on Cisco FMC 10 Describe, implement, and troubleshoot Cisco FirePOWER and Cisco FTD deployment such as in-line, passive, and TAP modes 11 Describe, implement, and troubleshoot Next Generation Firewall (NGFW) features such as SSL inspection, user identity, geolocation, and AVC (Firepower appliance) 12 Describe, detect, and mitigate common types of attacks such as DoS/DDoS, evasion techniques, spoofing, man-in-the-middle, and botnet |
Free update for one year
The purchase procedure is very simple and easy to operate. You will receive an email attached with the CCIE Security Written Exam (v5.0) exam dumps as soon as you pay, and you can download and study it immediately. What's more, you can enjoy one year free update for 400-251 exam questions & answers. That is say you will master the latest information about CCIE Security Written Exam (v5.0) exam test. In case of failure in the exam, we will give you full refund. With the latest information and valid CCIE Security Written Exam (v5.0) exam dumps, I believe you can pass the Cisco 400-251 exam test successfully.
What Clients Say About Us
Why Choose ITexamReview
Quality and Value
ITexamReview Practice Exams are written to the highest standards of technical accuracy, using only certified subject matter experts and published authors for development - no all study materials.
Tested and Approved
We are committed to the process of vendor and third party approvals. We believe professionals and executives alike deserve the confidence of quality coverage these authorizations provide.
Easy to Pass
If you prepare for the exams using our ITexamReview testing engine, It is easy to succeed for all certifications in the first attempt. You don't have to deal with all dumps or any free torrent / rapidshare all stuff.
Try Before Buy
ITexamReview offers free demo of each product. You can check out the interface, question quality and usability of our practice exams before you decide to buy.
Our Clients
ITexamReview is the provider of reliable and professional exam dumps and question solver for your coming real exam. Please trust us to give you a perfect answer.
Latest Exam Review
- GED-Mathematical-Reasoning exam reviewMay 28, 2022
- Financial-Management exam reviewMay 28, 2022
- GICSP exam reviewMay 28, 2022
- Platform-App-Builder-JPN exam reviewMay 28, 2022
Contact Us
From Monday to Saturday
Support: Contact now
If you have any question please leave me your email address, we will reply and send email to you in 12 hours.
Copyright © 2026 ITexamReview NETWORK CO.,LIMITED. All Rights Reserved. All trademarks used are properties of their respective owners. Privacy Policy