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34 Cards in this Set
- Front
- Back
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Why is it useful to categorize netweorks by size when discussing network design?
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to know how complex the network is
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What is one advantage to designing networks in building block fashion for large comanies?
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failures iscolated
network change flexibilty more security control easier to update |
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which network module maintains the resources that employees, partners, and customers rely on to effectively create, collaborate, and interact with information?
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data center
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a company connects to one ISP via multiple connections. What is the name given to this type of connection?
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Dual Homed
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which circumstance would result in an enterprise deciding to impliment a corporate WAN?
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when offices are located in different geographical areas so that they can access all services
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what is a disadvantage of a packet-switched network compared to a circuit-switched network?
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greater delay
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which statement describes a charachtorisic of dense wavelength division multiplexing?
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biodirectional over 1 fiber
multiplex more than 80 different channels up to 10gbps can amplyfy wavelengths supports sonets &sdh standards |
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under which 2 catagories of WAN connections does frame relay fit?
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Private and packet switched
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which WAN technology can serve as the underlying network to carry multiple types of network traffic such as IP, ATM, Ethernet, and DSL?
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MPLS
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an intercity bus company wants to offer constant internet connectivity to the users traveling on the buses. which two types of WAN infrastructure would meet the requirements?
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Public, switched
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how many 64 KBS voice channels are combined to produce a T1 line?
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24
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which two charactoristics desribe time-devision multiplexing?
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take turns using link
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What three steps are required to configure multilink PPP on a router?
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enable multilink interface for PPP
assign multilink group # assign interface to multilink bundle |
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What is the effect of these commands:
(Config-if)# encapsulation PPP (Config-if)# ppp quality 70 |
sets quality threshhold
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what are three benefits of using frame relay for WAN?
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Greater bandwidth
reliabilty resiliancy |
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which three parts of fram relay layer 2 PDU are used for congestion control?
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FECN
BECN Discard eligible bits |
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What is a charactorisitc of Frame relay that allows customer data transmissions to dynamically "Burst" over their CIR for short periods of time?
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extra unused bandwidth
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A DLCI number assigned to a frame relay circuit is to be manually added on a point-to-point link. which three subinterface commands could be used to complete the configuration?
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subinterface number
point-to-point DLCI # |
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Which type of traffic would most likely have problems when passing through a NAT device?
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VOIP
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What benefits does NAT64 provide?
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security, dual stack
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Which two technologys are implemented by organozations to support teleworker remote connections?
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IPsec VPN, Layer 2 VP
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Which IEEE standard defines the WiMax technology?
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802.16
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Which broadband solution is appropriete for home user who needs a wired connection not imited by distance?
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cable
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which technology requires the use of PPPoE to provide PPP connections to customers?
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Ethernet
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What is expected behavior of an ADSL service?
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highspeed downstream, slow upstream
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What is a type of VPN that is generally transparent to the end user?
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Site-to-site
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which two statements describe remote access VPNs?
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-dynamic VPN config for connecting to the network
-supported by vpn server for client entry at network edge -vpn type used for teleworkers |
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what are three charactoristics of the generic routing encapsulation GRE protocol?
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defined by EITF
47 is the Ip header Stateless no string security 24 Bytes of overhead |
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What is the purpose of a message hash in a VPN connection?
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Security
Data integrity authentication |
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What is the default location for cisco routers and switches to send critical logging events?
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console
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Which statement is a chractoristic of SNMP MIBs?
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MIBs organize variables hierarchally
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which SNMP message type informs the network managments system (NMS) immediatly of certain specified events?
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Trap
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Plain text, send its username and password, other router checks it
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PAP
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3 way handshake, sends challenge message
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CHAP
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