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40 terms

Cisco Module 5 test examples...

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Give three statements that accurately describe WANs....
WANs connect devices that are separated by wide geographic areas, WANs use the services of carriers such as telephone companies, cable companies, satellite systems, and network providers, WANs use serial connections of various types to provide access to bandwidth
Which three communications needs do WANs address...
Organizations often want to share information with other organizations across large distances, A department needs to share large data files quickly, Students need to do research for classes by accessing library indexes and publications that are located in other parts of their country and in other parts of the world
Describe the difference between LANs and WANs...
A LAN transmits data faster than a WAN, While a LAN connects computers, peripherals, and other devices in a single building or other small geographic area, a WAN transmits data across broad geographic distances
What is the correct command to enable EIGRP...
Router (config)# router eigrp 1
Which two statements accurately describe data-link protocols in a WAN...
Many data link layer protocols use a framing mechanism similar to HDLC, Data link layer protocols define how data is encapsulated for transmission to remote sites, and also the mechanisms for transferring the resulting frames to establish the connection across the communication line from the sending to the receiving device
What three statements accurately describe the functions of a packet-switching WAN communication link...
The route that the packets take to reach the destination site will vary, Packet-switched networks send data packets over different routes of a shared public network owned by a carrier to reach the same destination, The cost of a packet-switched network to the customer is generally lower than the cost of point-to-point leased lines
What three statements accurately describe DSL...
DSL technology is a circuit-switched connection technology that uses existing twisted-pair telephone lines to transport high-bandwidth data, such as multimedia and video, to service subscribers, DSL technology allows use of the local-loop line for normal telephone voice connection and an always-on connection for instant network connectivity, DSL technologies place upload (upstream) and download (downstream) data transmissions at frequencies above this 4-kHz window, allowing both voice and data transmissions to occur simultaneously on a DSL service
Name two types of DSL...
ADSL, IDSL
Which three statements are considerations for DSL...
DSL service can be incrementally added in any area, DSL has distance limitations, DSL is not universally available in all geographic locations
What three statements accurately describe cable connections...
The original purpose of the Multimedia Cable Network System Partners Ltd. was to define a product and system standard capable of providing data and future services over CATV plants, Cable modems enable two-way, high-speed data transmissions using the same coaxial lines that transmit cable television, Cable modem access provides speeds superior to leased lines, with lower costs and simpler installation
What three statements accurately describe the history of the Internet...
U.S. Department of Defense researchers devised a way to break messages into parts, sending each part separately to its destination, where reassembly of the message would take place. Today, this method of data transmission is known as a packet system, In 1972, ARPANET developers created the first email messaging software to more easily communicate and coordinate projects, In 1984, DNS was introduced and gave the world domain suffixes (such as .edu, .com, .gov, and .org) and a series of country codes
When configuring NAT, what determines the number of simultaneous NAT translations that can be active...
the number of addresses in the NAT pool
When configuring NAT, the Internet interface would be considered to be the .......
NAT outside interface
Which command clears a specific extended dynamic translation entry from the NAT translation table...
clear ip nat translation inside
The output of which command displays the active translations for a NAT translation table...
show ip nat translations
You are troubleshooting a NAT connectivity problem on a Cisco router. You determine that the appropriate translation is not installed in the translation table. Which three actions should you take...
Determine whether there are enough addresses in the NAT pool, Verify that the router interfaces are appropriately defined as NAT inside or NAT outside, Verify that the ACL referenced by the NAT command is permitting all necessary inside local IP addresses
What does the command ip route 186.157.5.0 255.255.255.0 10.1.1.3 specify...
The router should use address 10.1.1.3 to get to devices on network 186.157.5.0.
Which command displays information about static route configuration on a Cisco router...
show ip route
Which protocols is an example of an exterior gateway protocol...
BGP
In which situation is an administrative distance required...
when the same route is learned via multiple routing protocols
When a router receives a packet with a destination address that is within an unknown subnetwork of a directly attached network and there is no default route configured, what is the default behavior if the ip classless command is not enabled...
drop the packet
Give three statements that accurately describe the characteristics and functions of circuit-switched networks...
With circuit switching, a dedicated physical circuit is established, maintained, and terminated through a carrier network for each communication session, Circuit switching allows multiple sites to connect to the switched network of a carrier and communicate with each other, ISDN is an example of a circuit-switched network
Give three statements that describe considerations for PSTN as a communications link...
Other than a modem, no additional equipment is required, The cost associated with the implementation of a PSTN connection link for a WAN is relatively low, The maintenance of a public telephone network is very high quality with few instances in which lines are not available
Give three statements that accurately describe a point-to-point communication link...
A point-to-point (or serial) communication link provides a single, preestablished WAN communications path from the customer premises through a carrier network, such as a telephone company, to a remote network, Carriers usually lease point-to-point lines, which is why point-to-point lines are often called leased lines, For a point-to-point line, the carrier dedicates fixed transport capacity and facility hardware to the line of a customer
Which three statements accurately describe bandwidth available for WAN connections...
In North America, bandwidth is usually expressed as a "DS" number (DS0, DS1, and so on) that technically refers to the rate and format of the signal, The bandwidth on a serial connection can be incrementally increased to accommodate the need for faster transmission, Bandwidth refers to the rate at which data is transferred over the communication link
Give three statements that describe the functions of HDLC...
HDLC includes support for both point-to-point and multipoint configurations, no windowing or flow control, HDLC specifies an encapsulation method for data on synchronous serial data links using frame character and checksum
Give three statements that describe the function of PPP...
PPP originally emerged as an encapsulation protocol for transporting IP traffic over point-to-point links, PPP provides router-to-router and host-to-network connections over synchronous and asynchronous circuits, The LCP in PPP is used for establishment, configuration, and testing the data-link connection
Give three statements that describe considerations for point-to-point communication links...
require minimal expertise to install and maintain, usually offer a high quality of service, provide permanent, dedicated capacity that is always available
Which command enables HDLC...
Router (config-if)# encapsulation hdlc
How does the Cisco-proprietary HDLC make it possible for multiple network layer protocols to share the same serial link...
It adds a new type field
In which Cisco CLI mode do you enter the command to specify PPP authentication...
interface configuration mode
What does the ppp authentication chap pap command configure...
If authentication fails using CHAP, then PAP authentication is attempted
Which output from the show interface command indicates that PPP is configured properly...
Encapsulation PPP
Describe Frame Relay...
The connection to the network edge is often a leased line but dialup connections are available from some providers using ISDN or xDSL lines, uses both error and flow control, provides both PVC and SVC service using shared medium-bandwidth connectivity that carries both voice and data traffic
Describe ATM...
implemented by using virtual circuits, Virtual circuits provide a bidirectional communications path from one ATM endpoint to another, ATM is a type of cell-switched connection technology that is capable of transferring voice, video, and data through private and public networks
How does a distance vector router learn about paths for networks that are not directly connected...
from neighboring routers
What does a distance vector router send to its neighboring routers as part of a periodic routing table update...
The entire routing table
With RIP, load balancing is performed over multiple paths that have which characteristic...
Equal costs
Which command correctly specifies RIP as the routing protocol...
Router(config)#router rip
What is the default value of the RIP hold-down timer...
180 seconds