Guides d'étude, Notes de cours & Résumés

Which communication tool allows real-time collaboration? a. wiki b. e-mail c. weblog d. instant messaging CORRECT ANSWER instant messaging A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three) a. regenerating data signals b. acting as a client or a server c. providing a channel over which messages travel d. applying security settings to control the flow of data e. notif...

Network Characteristics CORRECT ANSWER Topoplogy Speed Cost Security Availability Scalability Reliability OSI (Open System Interconnect) Model CORRECT ANSWER A conceptual model to data transmission at each individual layer. How networks talk to each other OSI layers CORRECT ANSWER Sender(Encapsulation) -> Receiver (De-encapsulation) 7.)Application 6.)Presentation 5.)Session 4.)Transport (TCP/UDP, PORT) 3.)Network (IP address, operates with routers) 2.)Data-Link (Ethernet MA...

True statements about the operation of a full-duplex Ethernet network CORRECT ANSWER There are no collisions in full-duplex mode. A dedicated switch port is required for each full-duplex node. The host network card and the switch port must be capable of operating in full-duplex mode. Which OSI layer header contains the address of a destination host that is on another network? CORRECT ANSWER Network Layer Which layer of the TCP/IP stack combines the OSI model physical and data link layers...

What is the IEEE of Bluetooth? CORRECT ANWER 802.15 WPAN What is WiMAX and it IEEE? CORRECT ANWER -Worldwide Interoperability for Microwave Access -IEEE 802.16 WWAN In cellular broadband there are two types of cellular networks, what are they? CORRECT ANWER Global System for Mobile (GSM) and Code Division Multiple Access (CDMA). GSM is internationally recognized, while CDMA is primarily used in the US. Typically, it is used by rural homeowners and businesses where cable and DSL are no...

What is the primary purpose of a VLAN? CORRECT ANSWER To create a broadcast domain; enable segmentation or isolation of broadcast traffic Unassigned Cisco switch ports remain in which VLAN? CORRECT ANSWER VLAN 1 Do VLANs prevent broadcast storms? CORRECT ANSWER No, they minimize the size and effect of the broadcast storm on neighbor switches and hosts What are four advantages to using VLANs? CORRECT ANSWER 1. Enable access to network services based on logical requirements 2. Network se...

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