Objectives Upon completion of this chapter, you will be able to answer the following questions: • How do network devices use routing tables to direct packets to a destination network? • What is the function of fields in the routing table of a router? Key Terms This chapter uses the following key terms. You can…
Contention-Based Access — CSMA/CA
Another form of CSMA used by IEEE 802.11 WLANs is carrier sense multiple access/collision avoidance (CSMA/CA). CMSA/CA uses a method similar to CSMA/CD to detect if the media is clear. CMSA/CA uses additional techniques. In wireless environments it may not be possible for a device to detect a collision. CMSA/CA does not detect collisions but…
High-volume community users
High-volume community users High-volume community users do not have roles, which removes any performance degradation related to sharing calculations with external users: they are not affected by the number of roles that are selected in the Communities Settings page. The related user licenses are Customer Community, High Volume Customer Portal, and Authenticated Website. But how…
Contention-based Access – Cisco 100-150 Guide
Contention-based Access In contention-based multiaccess networks, all nodes are operating in half-duplex, competing for the use of the medium. However, only one device can send at a time. Therefore, there is a process if more than one device transmits at the same time. Examples of contention-based access methods include the following: • Carrier sense multiple…
Legacy LAN Topologies – Cisco 100-150 Guide
Legacy LAN Topologies Early Ethernet and legacy Token Ring LAN technologies included two other types of topologies: • Bus — All end systems are chained to each other and terminated in some form on each end. Infrastructure devices such as switches are not required to interconnect the end devices. Legacy Ethernet networks were often bus…
Sharing within Salesforce communities
Sharing within Salesforce communities Before closing this chapter, a few words should be said on how sharing is handled in communities. You should already be aware of what Salesforce communities are, but let’s provide a brief summary anyway. Salesforce communities are a way to allow external people to interact and collaborate with your business processes….
WAN Topologies – Cisco 100-150 Guide
WAN Topologies (31.1.2) WANs are commonly interconnected using three common physical WAN topologies Point-to-Point A point-to-point link (Figure 31-3), in the simplest and most common WAN topology. It consists of a permanent link between two endpoints. Figure 31-3 Point-to-Point Topology Hub and Spoke Figure 31-4 shows a WAN version of the star topology in which…
Data Link Layer – Cisco 100-150 Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary. bus topologyCarrier sense multiple access with collision avoidance (CSMA/CA)Carrier sense multiple access with collision detection (CSMA/CD)extended star topologyfull-duplexhalf-duplexLogical topologyPhysical topologyring topologystar topologyIntroduction (31.0)…
Enterprise territory management 2
From the Opportunity Territory Assignment section, you can enable a more detailed filter when setting up territory management for Opportunities. The default OppTerrAssignDefaultLogicFilter Apex class can be found in the documentation (see https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_interface_TerritoryMgmt_OpportunityTerritory2AssignmentFilter.htm) and is out of scope for this book (ask a developer to help you with the setup). Each territory has its own…
What Did I Learn in this Module?
• Copper Cabling—Networks use copper media because it is inexpensive, easy to install, and has low resistance to electrical current. However, copper media is limited by distance and signal interference. The timing and voltage values of the electrical pulses are also susceptible to interference from two sources: EMI and crosstalk. Three types of copper cabling…