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1. By default, how often does RIP broadcast routing updates? (ch1)
Every 30 seconds
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2. What is the maximum allowable hop count for RIP? (ch1)
15
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3. What are the four areas that are responsible for most of the call failures? (Ch9,T-253)
1. DTMF receivers
2. Too few trunks or circuits
3. Inadequate switch processing
4. Too few SS-7 links
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4. What has the following responsibilities: system recovery, software upgrades, storage of global routing information, distribution of information to all subsystems, and billing. (ch.9,T-233)
Central Processing System (CPS)
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5. How can link-state protocols limit the scope of route changes? (ch2)
By sending the mask along with the address
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6. What are two characteristics of OSPF? (ch.2)
Hierarchical, Open standard
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7. One disadvantage of using ___ is that fraudulent calls can be placed using a black box tone generator. Another common problem is the amount of bandwidth used to carry the signaling information. (ch. 10,T-264)
Single-Frequency (SF) Signaling
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8. Which are the problems with Channel Associated Signaling (CAS)? (ch.10,T-267/8)
Inability to carry signaling messages with special feature information, The need to turn off the robbed bit signaling function when transmitting high-speed data, Uses the trunk to carry the signaling information and eats up precious bandwidth
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9. What could cause the message "RIP: bad version 128 from 160.89.80.43" to be displayed in the output of the debug ip rip command? (ch3,C-75)
Receiving a malformed packet
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10. The output from which command includes the number of packets sent and received. (c. 3,C-75)
show ip eigrp traffic
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11. What are the four most common problems with VoIP services? (ch.11,T-291)
Choppiness, Dead air, Echo, Talking over
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12. An MOS score of 2 indicates the call was _______. (Ch11,T-291)
2 indicates the call is poor
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13. Ethernet switching or bridging _____ the available bandwidth of a network by creating _____ network segments. (ch4)
Increases, dedicated
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14. Which layer of the OSI model does a LAN switch use to make a forwarding decision? (ch4)
Layer 2
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15. 8 wire conductor used to terminate
high-speed digital circuits (Ethernet or T-1)? (ch13,T-328/9?)
RJ-45 for Ethernet / RJ-48 for T-1
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16. In fiber, what is the medium that reflects light and has a refractive index? (ch.13,T-332)
Core and cladding made of glass
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17. At which layer of the hierarchical model of network design do workstations and servers enter the network? (ch.5)
Access
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18. Which network devices reduce the size of collision domains and provide error detection? (ch.5)Bridges, Switches
Bridges, Switches
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19. What is the term used to describe the newest way to construct fiber cable? (T-388-91)
Ribboning
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20. What is the large cable called that interfaces with the Central office through the main thoroughfare?
Feeder cable
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21. What is the CLI prompt for privileged executive mode?
#
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22. What is the syntax to display the help menu for a command such as show?
show ?
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23. Identify the types of architecture/topologies in a core network.
Ring, Mesh, Linear, Point-to-point
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24. What does NZDSF stand for? (ch.13,T-337)
Non-zero dispersion shifted fiber
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25. What is the switching mechanism used by bridges and switches to exchange configuration messages?
BPDU (Bridge protocol data unit)
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26. Which port role specifies the forwarding port for RSTP? (ch.7,C-206)
Designated port role
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27. Identify the categories of protocols in a metropolitan network. (ch.16,T-446)
TDM, fast packet, Ethernet
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28. ATM feeding into central banks is an example of what topology? (ch.17,T-486)
Multipoint hub network
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29. What feature is required for a VLAN to span two switches? (ch.8)
- A trunk to connect the
- switches
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30. What is the default VTP mode on a Catalyst switch? (ch8)
Server
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31. What is the simplest network topology? (ch.20,T-615)
Point-to-Point
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32. What device is used at the edge of the network to aggregate DSL circuits together to one circuit to the central switch? (ch.17,T-492)
DSLAM - digital subscriber line access multiplexer
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33. What VLAN trunking technology encapsulates the entire frame? (ch9,C-246)
802.1Q
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34. What are the benefits of VTP?(ch9,C-256)
- Minimizes misconfigurations and configuration inconsistencies.
- Reduces management and monitoring complexities of networks with VLANs.
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35. Which of the following is NOT a factor to consider when choosing DS-1 or DS-X? (ch18,T-521)
cost
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36. What are the brains of a multiplexer? (ch.18,T-527)
Common card
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37. What are the 3 specific portions of fiber? (ch.19,T-547)
Span, System, Segment
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38. List the categories of a terminal box. (ch.19,T-553)
Underground, Aerial fixed count, Ready access, Pedestal mount, Pole mount
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39. What kind of server stores files on a LAN network? (ch.20,T-588)
File Server
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40. What is the middleman between the customer and Internet? (ch.20,T-595)
ISP - internet service provider
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