CCDA 640-864 Summary Notes – Chapter 6 – Day 14

Exam Topic 3: WAN Design Methodology Use PPDIOO Methodology. Key concepts: Analyze the network requirements Application type Traffic volume Traffic patterns Characterize existing network Design topology chould be flexible and have room for growth Implement High Availability. Consider: Response time Throughput Reliability Application requirements Data File transfer Reasonable response time (time between the cient user request … Continue reading CCDA 640-864 Summary Notes – Chapter 6 – Day 14 →

CCDA 640-864 Summary Notes – Chapter 6 – Day 13

Exam Topic 1: Wide-area networks (WAN) Overview WAN - communication networks that are used to connect network locations that are geographically separated. Tarrif - a fee charged by a service provider for providing WAN services to customers. Service - WAN communications provided by service providers or telecommunication carriers Choice of WAN Technology depends on : … Continue reading CCDA 640-864 Summary Notes – Chapter 6 – Day 13 →

CCDA 640-864 Summary Notes – Chapter 5 – Day 12

Exam Topic 3: Wireless LAN Design Controller Redundancy Design: Deterministic Dynamic Deterministic Controller Redundancy Ap is configured with Primary Controller Secondary controller Tertiary controller DisAdvantages More planning required More configuration Advantages Better predictability Faster failover times Network stability Flexible and powerful redundancy design options Fallback incase of failover Recommended best practice Examples: N+1 N+N N+N+1 N+1 … Continue reading CCDA 640-864 Summary Notes – Chapter 5 – Day 12 →

CCDA 640-864 Summary Notes – Chapter 5 – Day 11

Exam Topic 2 - Part 2: Cisco Unified Wireless Network (UWN) Architecture LWAPP Discovery of WLC LWAPP Image procedure: CAPWAP Image procedure: CAPWAP AP sends a CAPWAP discovery request WLC responds withCAPWAP response within 60 seconds WLC selection is configurable onWLC. AP selects according to the following order Primary sysName (preconfigured) Second sysName (preconfigured) Tertiary sysName … Continue reading CCDA 640-864 Summary Notes – Chapter 5 – Day 11 →

Citrix Netscaler 10 Summary Notes – Getting Started – Day 6

Load Balancing Overview Distributes client requests across multiple servers to optimize resource utilization Prevents bottlenecks Configuration: Define a virtual server that proxies multiple servers in a server farm Balance the load Provides traffic management from Layer 4 (TCP and UDP) through Layer 7 (FTP, HTTP, and HTTPS) Load balancing algorithms are used to determine how to … Continue reading Citrix Netscaler 10 Summary Notes – Getting Started – Day 6 →

CCDA 640-864 Summary Notes – Chapter 5 – Day 10

Exam Topic 2 - Part 1: Cisco Unified Wireless Network (UWN) Architecture Benefits: Deliivers scalable, manageable and secure WLANs Combines wired and wireless network Reduced Total Cost of Ownership (TCO) Enhanced visibility and control Dynamic RF management WLAN Security Mobility Enhanced productivity and collaboration Network Elements: Client devices access points - access to the network network … Continue reading CCDA 640-864 Summary Notes – Chapter 5 – Day 10 →

Citrix Netscaler 10 Summary Notes – Getting Started – Day 5

System Configuration slot/port VLANS Supports IEEE802.1Q VLANS Supported: Default VLAN = 1 PortBased VLAN Tagged VLAN (nsvlan) Link Aggregate Channels Channel parameters have precedence over the interface parameters Clock Clock synchronization is done in shell DNS Can Function as: Authoritative Domain Name Server (ADNS) DNS proxy server End Resolver Forwarder (typical config) Can add resource records such … Continue reading Citrix Netscaler 10 Summary Notes – Getting Started – Day 5 →

CCDA 640-864 Summary Notes – Chapter 5 – Day 9

Cisco Unified Wireless Network (UWN) architecture - combines wireless and wired network. Exam Topic 1: Wireless LAN Technologies WLAN Standards IEEE 802.11 (Legacy) (1997) Speeds of 1 (typical) and 2 (max) Mbps Used direct sequence spread spectrum (DSSS) and frequency-hopping spread spectrum (FHSS) in L1 DSSS divides data into separate sections; each section travels over different frequencies at the … Continue reading CCDA 640-864 Summary Notes – Chapter 5 – Day 9 →

Citrix Netscaler 10 Summary Notes – Getting Started – Day 4

Citrix NetScaler Editions Feature licence required on all editions Standard Edition SME comprehensive L4-L7 traffic management Web application availability Enterprise Edition Advanced L4-L7 traffic management Web Application acceleration Increases Web application performance, availability and reduced costs Platinum Edition Reduces data center costs Accelerates application performance End to end visibility of application performance Advanced application security Administration options: … Continue reading Citrix Netscaler 10 Summary Notes – Getting Started – Day 4 →

CCDA 640-864 Summary Notes – Chapter 4 – Day 8

Exam Topic 4: Virtualization Overview Virtualization technologies abstract logical elements from hardware (applications or operating systems) or networks (LANs and SANs) and run them in a virtual state Allow a physical device to share its resources by acting as multiple versions of itself Allow multiple physical devices to logically appear as one Benefits of virtualization improves network efficiency provides enhanced flexibility … Continue reading CCDA 640-864 Summary Notes – Chapter 4 – Day 8 →