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Showing 20 results · Page 12 for “hr”. More results are available below.

Mini-lessons

CC · Network Security

OSI and TCP/IP layers in one breath

…oice and DNS. Mnemonic from the bottom: Please Do Not Throw Sausage Pizza Away. Knowing which layer a device or attack operates at answers many questions.

CC · Security Operations

Logging, monitoring and awareness training close the loop

…ust be protected from tampering and clocks must be synchronised so events line up. Monitoring turns raw logs into detection. The human layer matters just as much: security awareness training…

CCA · Kubernetes networking

Services find Pods through selectors

A Kubernetes Service provides a stable way to reach a changing set of workload endpoints. Its selector must match the intended Pods, and those Pods need to be ready for normal traffic. Inspe…

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CCA · Kubernetes security

Reduce workload privileges at several layers

…hat the workload can do both inside its container and through the credentials and host resources available to it. Worked example A namespace workload needs to read one kind of resource. What…

CCAS · Accounting controls

Independent checks make errors harder to conceal

…controls protect the reliability of financial records through authorization, reconciliation, separation of duties and traceable changes. The person recording or receiving funds should not be…

CCAS · Risk assessment and treatment

Treat risk with an accountable decision

…ts consequences for an objective. Identify the asset, threat and conditions before choosing a response. Controls may reduce likelihood or impact, while acceptance requires an accountable own…

CCIE-AUTO · Network automation and APIs

Treat network changes as controlled software changes

Network automation expresses intended configuration through code or structured requests. Validate inputs, inspect proposed changes and apply them to a limited scope before broad rollout. Sto…

CCIE-AUTO · Delivery pipelines

Promote a verified artifact

…ce and test results, and promote the intended version through environments. Protect deployment credentials and define a recovery path. A green build only proves the configured checks passed;…

CCIE-COLLAB · IP routing

The most specific matching route wins

… route does not guarantee a return path or permission through an intervening firewall. Worked example A router has routes for 10.0.0.0/8 and 10.2.0.0/16. Which matches destination 10.2.3.4 m…

CCIE-DC · Storage concepts

Choose storage by access pattern

…ts. Capacity alone is insufficient: consider latency, throughput, concurrent access and recovery. Storage redundancy can preserve availability during hardware failure, but does not replace r…

CCIE-ENT · Network automation and APIs

Treat network changes as controlled software changes

Network automation expresses intended configuration through code or structured requests. Validate inputs, inspect proposed changes and apply them to a limited scope before broad rollout. Sto…

CCISO · Risk assessment and treatment

Treat risk with an accountable decision

…ts consequences for an objective. Identify the asset, threat and conditions before choosing a response. Controls may reduce likelihood or impact, while acceptance requires an accountable own…

CCNA · Network Fundamentals

TCP guarantees delivery, UDP guarantees speed

TCP opens a three-way handshake, numbers every byte, acknowledges receipt, retransmits losses and slows down under congestion. That reliability costs latency and header bytes. UDP does none …

CCNA · Security Fundamentals

DHCP snooping builds the table that DAI trusts

…h stops rogue DHCP servers. As legitimate leases pass through, the switch records the client MAC, IP, VLAN and port in a binding table. Dynamic ARP Inspection then checks every ARP reply on …

CCNA · Security Fundamentals

WPA3 replaces the PSK handshake with SAE

… attempt an offline dictionary attack against the passphrase. WPA3-Personal uses Simultaneous Authentication of Equals, a password-authenticated key exchange, so each attempt requires live i…

CCNP-AUTO · Network automation and APIs

Treat network changes as controlled software changes

Network automation expresses intended configuration through code or structured requests. Validate inputs, inspect proposed changes and apply them to a limited scope before broad rollout. Sto…

CCNP-AUTO · Delivery pipelines

Promote a verified artifact

…ce and test results, and promote the intended version through environments. Protect deployment credentials and define a recovery path. A green build only proves the configured checks passed;…

CCNP-COLLAB · IP routing

The most specific matching route wins

… route does not guarantee a return path or permission through an intervening firewall. Worked example A router has routes for 10.0.0.0/8 and 10.2.0.0/16. Which matches destination 10.2.3.4 m…

CCNP-DC · Storage concepts

Choose storage by access pattern

…ts. Capacity alone is insufficient: consider latency, throughput, concurrent access and recovery. Storage redundancy can preserve availability during hardware failure, but does not replace r…

CCNP-ENT · Network automation and APIs

Treat network changes as controlled software changes

Network automation expresses intended configuration through code or structured requests. Validate inputs, inspect proposed changes and apply them to a limited scope before broad rollout. Sto…