Describes the portion of the network where devices connect to the network and includes controls for allowing devices to communicate on the network.
In the hierarchical network design model, the later that invokes policy and routing control.
At which layer in the hierarchical network design model are VLANs typically defined?
The backbone of a switched LAN. All traffic to end from peripheral networks must pass through this layer. It includes high-speed switching devices that can handle relatively large amounts of traffic.
A desirable property of a network to handle growing amounts of traffic in a graceful manner.
The duplication of devices, services, or connections so that, in the event of a failure, the redundant devices, services, or connections can perform the work of those that failed.
A loosely defined networking measure based on throughput and error rates.
An encompasing term describing the prevention and means of prevention of unauthorized access to an entity, location, or system.
A measure of the lack of difficulty in a managing network devices and associated software in working order.
A measure of the lack of difficulty in keeping network devices and associated software in working order.
The capability to carry voice traffic over an IP-based network with POTS-like functionality, reliability, amd voice quility. Enables a router to corry voice traffic over an IP network.
Voice Over IP (VoIP)
Voice packets are transported using...
IP in compliance with ITU-T spcification H.323
The speed and compatibility of a group of switches running STP to agree on a loop-free Layer 2 topology for a switched LAN.
A measure of performance for a transmission system that reflects its transmission quality and service available.
Quality of Service (QoS)
A digital or analog telephone switchboard located on the subscriber premises and used to connect private and public telephone networks.
Private Branch Exchange (PBX)
A large and diverse network connecting major sites within a company or other organization.
How does a enterprise network differ from a WAN?
An enterprise network is privately owned and maintained
The powering of network devices over Ethernet cable.
Power over Ethernet (PoE)
Filters and forewards packets based on OSI layer 2 through Layer 7 information at wire-speed by utilizing dedicated hardware that stores data structures mirroring routing table, ARP table, and ACL information.
Which three options correctly associate a layer of the hierarchical design model with its function? (Choose three.)
Core - interface for end devices Distribution - traffic control and security policies Access - interface for end devices Distribution - high-speed backbone Core - high-speed backbone Access - implementation of security policies
Distribution - traffic control and security policies
Access - interface for end devices
Core - high-speed backbone
With respect to network design, what is convergence? a) implementation of standard equipment sets for LAN design b) implementation of a core-distribution-access design model for all sites in an enterprise c) a point in the network where all traffic "converges" before transmission to the destination, normally the core switch d) combining conventional data with voice on a common network
d) combining conventional data with voice on a common network
Name three potential benefits of a converged network.
combines voice, video, and applications in one computer
simplified network changes
combines voice and data network staffs
What factor may complicate user communities analysis?
a) application changes may radically affect predicted data growth b) server to server traffic may skew user port usage data c) application usage is now always bound by department, or physical location d) different organization applications may share data stores
c) application usage is now always bound by department, or physical location
Data rate that each port on the switch is capable of attaining
number of ports available on a single switch
Processing apabilities of a switch by quantifying performance of the switch by how much data it can process per second
Ability to utilize multiple switch ports currently for higher throughput data communication
What would be the port capacity of a single port on a 48-port Gigabit Ethernet switch?
a) 48 Gbps b) 10 Mbps c)1000 Mbps d)100 Mbps
A switch that uses MAC addresses to foreward frames operated at which layer of the OSI model?
a) Layer 1 b) Layer 2 c) Layer 3 d) Layer 4
b) Layer 2
What is a feature offered by all stackable switches?
a) predetermined number of ports b) fully redundant backplane c) support for Gigabit connectivity d) low bandwidth for inter-switch communications e) PoE Capability
b) fully redundant backplane
What function is performed by a Cisco access level switch?
a) inter-VLAN support b) routing c) providing PoE d) link aggregation
c) providing PoE
Classifying and prioritizing traffic based on type of data.
QoS (Quality of Service)
Allow you to segment the traffic on a switch into separate subnetworks.
Controls which end devices are allowed to communicate on the network.
Distribution layer and core layer are combined into one layer.
High-speed backbone of the internetwork capable of forwarding large amounts of data quickly.
Determine the design requirements for a network
Access layer switches can be configured with this option to provide control over which devices are allowed to connect to the network
Cisco proproetary link aggregation technology
Properly designed hierarchical networks can achieve near wire speed between all devices
Consistency between switches at each layer allows for rapid recovery and simplified troubleshooting.
Dramatically increases availability
Controls the flow of the network traffic using policies and delineates breadcast domains be performing rounting functions between virtual LANs(VLANs).
The process of combining voice and video communications on a data network
The modularity of the hierarchical design facilitates ease of network expansion.
A graphical representation of a network infrastructure.
Cannot add hardware features or options beyond those that originally came with the switch
fixed configuration switches
allow installation of different line cards
A process of measuring the bandwidth usage on a network and analyzing the data for the purpose of performance tuning, capacity planning, and making hardware improvement decisions.
traffic flow analysis
Reduces bottlenecks of traffic by allowing up to eight switch ports to be bound together for data communications.
The number of ports available on a single switch.
Uses the network cable to deliver electicity to devices.
Power over Ethernet (PoE)
Generated between data storage devices on the network.
Interconnected using a special backplane cable
Typically traverses multi[le switches to reach its destination
Defines the capabilities of a switch by classifying how much data the switch can process per second
also know as Layer 3 switches
A process of idenifying various groups and their impact on network performance.