Networking Standards and Connections

 

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What is the functionality of the OSI model Layer 7, the application layer?

• It sits just below the OS and provides resources for user applications

Question

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Match each network standard to the network standards organization that developed it.

• 802.3 - 

  IEEE
• TCP/IP - IETF
• OSI model - ISO
• Wiring -  TIA

Question

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The telecommunications group of the ITU is responsible for many standards used in networking. Match the following ITU standards to the technology they apply to.

• H.323 - 

  Used in early voiceover IP systems for setting up and terminating telephone calls
• X.200 - Describes the open system interconnect or basic reference model
• V.92 -  Allows modems to transmit up to 56,000 bits per second over telephone wires
• X.509 - Defines digital certificates that are critical, public key infrastructure, secures web browsing transactions

Question

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What is the purpose of the OSI networking model?

• The OSI model provides a reference model to help users understand networking, how various software and hardware elements work together, and compare basic functional relationships between different networks.

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Which category of UTP cable is rated to support 10 Gbps transmission speeds at distances of up to 100 meters?

• Cat 6A

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What is a modern function handled by OSI model Layer 5, the session layer?

• Support Remote Procedure Calls (RPCs) for remote applications

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What are the correct color assignments for pins 1 and 2 on a T568B wiring configuration?

• 1) White on orange and 2) orange

Question

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What is a proper technique for preparing an RJ-45 cable for crimping?

• When preparing to crimp the connector, position the RJ-45 connector with the pins facing you

Question

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Match each function to the layer of the OSI model at which the function is performed.

• Network - Defines routing protocols to determine how traffic is routed
• Presentation - Provides conversion between character sets
• Application - Defines protocols used by apps that transmit data over network
• Session - Establishes and maintains connections
• Transport - Identifies applications through port numbering
• Data link - Has physical addresses to identify devices

Question

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If two workstations are connected directly together and neither workstation NIC supports Auto MDI/MDI-X, which type of UTP cable should be used?

• Crossover

Question

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IEEE developed standards for LAN technology. Match the following standards to the technology they apply to.

• Broadband wireless access (WiMAX) - 802.16
• Ethernet - 802.3
• Wi-Fi - 802.11

Question

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Which of the following components are used in fiber optic cabling systems?

• MT-RJ connectors

• LC connectors

Question

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What is the purpose of cladding in fiber optic cables?

• Reflect light back at the core.

Question

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What type of hardware is assigned to layer 4?

• None of the above

Question

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Which of the following are NOT true of the physical layer of the OSI model?

• Most network problems do not occur at this layer

Question

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The three most common wireless technologies are:

• WiFi
• Cellular
• WiMAX

Question

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What are proper considerations for designing cabling systems?

• It's common to use two UTP drops per user area
• Cable routing should be planned to avoid sources of electromagnetic interference

Question

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Which of the following statements correctly describes how a workstation is connected to a switch in a UTP cabling system?

• Workstation connects to wall jack with RJ-45 terminated UTP. UTP connects wall jack to patch panel in TR. UTP connects patch panel to switch.

Question

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What are accurate statements about half duplex communications?

• Half duplex can send and receive, but not at the same time
• Half duplex is less efficient than full duplex communication

Question

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What are the three types of tests done to fiber optic wires after installation?

• Continuity
• Insertion loss
• OTDR

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Which of the following are NOT functions of the presentation layer?

• Out-of-network encryption

Question

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What network media type directly enables mobility?

• Wireless

Question

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Match each area of responsibility to the organization responsible for it

• Internet Society (ISOC) - Provide leadership for internet-related organizations
• Internet Engineering Task Force (IETF) - Create or update internet standards through working groups
• Internet Assigned Numbers Authority (IANA) - Responsible for port numbers and standard numbers
• Internet Corporation for Assigned Names and Numbers (ICANN) - Coordinate domain name registrations and IP address assignments

Question

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Which of the following components are used in wireless systems? (Select all correct answers.)

• Receiver
• Transmitter

Question

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When installing network cabling, what techniques are considered to be good practice?

• Divide cabling on racks so that half come in from the left and half come in from the right
• Keep cable outer jackets close to the point of termination

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What quality differentiates fiber optic cables from UTP cables?

• They're immune to electromagnetic interference

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What are important considerations for planning and installing wireless networking?

• Wireless signals in buildings have a shorter range
• Cellular signals use different equipment than WiFi

Question

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At which layer of the TCP/IP model is logical addressing defined?

• Internet

Question

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An example of cross-over communication using a crossover cable would be:

• Between two computers sending data directly to each other.

Question

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The network layer, or layer 3, controls communications between LANs. Match the techniques used to their definition.

• Routing - Receives packets and send the packet to its destination based on the network address or logical address
• Logical addressing - Assigns addresses to devices in different networks

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The purpose of the data link layer is to control communications within a LAN. What are the two primary tools used by the data link layer?

• Physical addressing
• Media access control

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What is one of the categories of UTP components?

• Telecommunications rooms

Question

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What are accurate statements about full duplex communications?

• Ethernet switches use full duplex communications
• Full duplex can send and receive at the same time

Question

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Sequence the proper order for installing cabling systems

1. Mount racks in telecommunications closets
2. Pull the cables to user work areas
3. Punch down cables using a specific color order
4. Terminate wall jacks using a modular insert
5. Create patch cables using T568A or T568B pinning pattern

Question

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In which phase of implementing a structured cabling system is each of the following tasks completed?

• Installation - Label cables with unique identification numbers
• Installation - Mount equipment racks in TR
• Testing - Measure crosstalk
• Design -  Verify compliance with distance limitations
• Design - Select cables, connectors, wall jacks, patch panels

Question

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The four typical test types done when verifying you cable installation are:

• Length test
• Crosstalk test
• Wire map
• Attenuation