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CCNA is the associate level of certification system in Cisco. CCNA certifications expire in 3 years. As it is valid for three years, you should take recertification exam, you should choose any one of following ways:
pass any one associate exam like 200-301 CCNA exam, Cisco certified DevNet exam;
pass one technology core exam;
pass any one expert-level written exam;
pass any one expert-level Lab/Practical exam
Losing or forgetting the password to a Cisco router can bring network maintenance and emergency troubleshooting to an immediate standstill. Whether you are setting up a router fresh out of the box, managing a small business wireless unit, auditing saved configuration backups, or standing in front of an enterprise rack locked out of the CLI,... » read more
Losing or inheriting an unknown administrative password on a Cisco router can bring network maintenance to a complete standstill. Whether managing an enterprise Integrated Services Router (ISR), a Catalyst edge platform, or a Cisco Small Business RV-series device, regaining administrative access requires physical console or hardware access. Depending on your operational goals, you can take... » read more
Cisco Unified Communications platforms—powered by Cisco Unified Communications Manager (CUCM) and Cisco Unity Connection—rely on a numeric Personal Identification Number (PIN) to secure access to voice messages. Whether you are setting up a newly provisioned desk phone, updating an expiring credential, or locked out after several unsuccessful login attempts, resetting your Cisco voicemail PIN can... » read more
Modern email threats have shifted away from crude, mass-distributed malware attachments toward sophisticated identity deception. Today’s threat actors rely on Business Email Compromise (BEC), display name impersonation, executive spoofing, and socially engineered credential lures that contain no malicious payloads, suspicious attachments, or blacklisted links. Because these messages appear structurally legitimate, conventional Secure Email Gateways (SEGs)... » read more
Traditional endpoint protection relies heavily on static signature databases, scanning files at the exact moment they touch a storage volume. If a threat is novel, obfuscated, or fileless, legacy antivirus solutions register the binary as clean, grant it execution rights, and permanently look away. Cisco Advanced Malware Protection (AMP)—now integrated into the Cisco Secure portfolio... » read more
Traditional enterprise Wide Area Networks (WANs) were built for a different era of computing. In legacy architectures, remote branch offices relied on expensive, static Multiprotocol Label Switching (MPLS) circuits to backhaul all traffic through a centralized corporate data center before it could reach external destinations. As enterprise workloads migrated to public clouds (AWS, Microsoft Azure,... » read more
For over a decade, secure remote access centered almost entirely on establishing a virtual private network (VPN) tunnel back to a corporate firewall. As enterprise infrastructure shifted to distributed multi-cloud environments and remote work became standard, that perimeter-centric model became unsustainable. IT teams found themselves managing an unmanageable sprawl of endpoint agents—one for VPN, another... » read more
Modern enterprise data centers cannot afford single points of failure. In the Cisco Unified Computing System (UCS) architecture, high availability is not an add-on feature—it is engineered directly into the hardware and software topology. At the center of this ecosystem is Cisco UCS Manager (UCSM), running embedded on paired Cisco UCS Fabric Interconnects (FIs). To... » read more
The Domain Name System (DNS) is traditionally described as the address book of the internet, converting human-readable domain names into machine-routable IP addresses. In enterprise cybersecurity, however, DNS is an early-warning radar system. Nearly all malware variants, phishing campaigns, and command-and-control (C2) communication channels require a DNS lookup before establishing an initial TCP or UDP... » read more