Archives by Tag 'CCNA'
new 640-802 emerging drag and drop questions
1.Firewall isolate two or more physical network of a system (or a combination of many systems); Firewall with centralized management, implementation, monitoring the characteristics of security policy; general firewall can be open (unTrust, Internet), ...
640-802 Emerging drag and drop a question
bandwith efficient moreflexible cost delay load
advantage
disadvantages
point-to point line
circuit exchange
packet exchange
answer:
advantage
disadvantages
point-to point line
more...
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...Fast Ethernet
Instead of requiring campuses to invest in a completely new technology to gain increased bandwidth, the networking industry developed a higher-speed Ethernet based on existing Ethernet
standards. Fast Ethernet operates at 100 Mbps and is defined...
Ethernet (10 Mbps)
Ethernet is a LAN technology based on the Institute of Electrical and Electronics Engineers (IEEE) 802.3 standard. Ethernet (in contrast to Fast Ethernet and later versions) offers a bandwidth of 10 Mbps between end users. In its most basic form, Ethe...
Layer 3.Layer 4 .Multilayer Switching
Layer 3 Switching Devices involved in Layer 3 switching perform the following functions: ■ Packets are forwarded at Layer 3, just as a router would do. ■ Packets are switched using specialized hardware, ASIC, for high speed and low latency.
...
Layer 3 Routing
Devices involved in Layer 3 routing perform the following functions: ■ Packets are forwarded between networks based on Layer 3 addresses. ■ An optimal path is determined for a packet to take through a network to the next router. ■ Packet forward...
Layer 2 Switching
Devices that forward frames at Layer 2 involve the following functions: ■ MAC addresses are learned from the incoming frames’ source addresses. ■ A table of MAC addresses and their associated bridge and switch ports is built and maintained. ...
Chapter 10: WLAN Management
1. The Cisco Unified Wireless Network unique approach addresses all layers of the WLAN network through what five interconnected elements?
a. Access points, mobility platform, network unification, world-class network management, and unified advan...
Chapter 9: Introducing 802.1x and Configuring Encryption and Authentication
1. Which of the following is not an issue or a weakness of initial WLAN security approaches?
a. Relying on SSID as a security measure
b. Relying on MAC filters
c. Overhead of mutual authentication between wireless clients and access ...