Topic 3: Network Media & Topologies Flashcards by Drew Labate

Which of the following can MOST likely cause intermittent connection problems with a CAT5 network cable?
A. Cable has been looped too many times.
B. Cable has a twist tie attached too close to the connector.
C. Cable is too warm.
D. Cable is run too close to a fluorescent light.

Answer: D
Explanation: Cat 5 is a twisted pair cable for carrying signals. This type of cable is used in structured cabling for computer networks such as Ethernet. The cable standard provides performance of up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet).

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Which of the following is an example of a CSMA/CD medium?
A. WEP
B. SONET
C. Token ring
D. Ethernet

Answer: D
Explanation: CSMA/CD is a Media Access Control method in which a carrier sensing scheme is used and also a transmitting data station that detects another signal while transmitting a frame, stops transmitting that frame, transmits a jam signal, and then waits for a random time interval before trying to resend the frame

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Which of the following copper cable types should be chosen to run gigabit speeds through a dropped ceiling that returns airflow?
A. Non-Plenum CAT5
B. Non-Plenum CAT5e
C. Plenum CAT5
D. Plenum CAT5e

Answer: D
Explanation: Cat 5e is a twisted pair cable for carrying signals. This type of cable is used in structured cabling for computer networks such as Ethernet. The cable standard provides performance of up to 100 MHz and is suitable for 10BASE-T, 100BASE-TX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet).

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A technician tests a cable going to the patch panel and notices the following output from the cable tester:
1------------------1
2------------------2
3------------------3
4------------------4
5------------------5
6------------------6
7------------------7
8------------------8
On a T568A standard CAT5e cable, which of the following wire strands is the cause of this
connectivity issue?
A. White Orange
B. Solid Brown
C. Solid Orange
D. White Green

Answer: D
Explanation:
In a T568A Cable, the White/Green is the TX+

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Which of the following components of wiring distribution is referred to as the core communications closet for an organization?
A. MDF
B. Smart jack
C. IDF
D. Demarc extension

Answer: A
Explanation: MDF stands for Main Distribution Frame and is the main computer room for servers, hubs, routers, DSL’s, etc. to reside.

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Users notice a problem with their network connectivity when additional lights are turned on. Which of the following would be the cause for this problem?
A. DDOS
B. Cross talk
C. Open short
D. EMI

Answer: D
Explanation:
External Machine Interface (EMI), an extension to Universal Computer Protocol (UCP), is a protocol primarily used to connect to short message service centres (SMSCs) for mobile telephones.

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A user does not have network connectivity. While testing the cable the technician receives the below reading on the cable tester:
1———–1
2———–2
3———–3
4———–4
5———–5
6———–6
7———–7
8———–8
Which of the following should the technician do NEXT?
A. Cable is a crossover, continue troubleshooting
B. Pin 3 is not used for data, continue troubleshooting
C. Pin 3 is not used for data, replace the NIC
D. Redo the cable’s connectors

Answer: D

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Management wants to be sure that the existing wiring infrastructure conforms to CAT5e standards. Which of the following is the correct tool?
A. Cable certifier
B. Cable tester
C. OTDR
D. Protocol analyzer

Answer: A
Explanation:
A cable certifier is used to verify that a cable meets its specifications such as the bandwidth and frequency. For example, it can verify a CAT 5e cable meets specifications and supports speeds of 1000Mbps.

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In contrast to earlier Wi-Fi speeds, which of the following BEST describes the antenna and channelization properties used in 802.11n?
A. MIMO, DSSS
B. MIMO, OFDM
C. CSMA, DSSS
D. CSMA, CDMA

Answer: B
Explanation: 802.11n builds upon previous 802.11 standards by adding multiple-input multipleoutput (MIMO). The additional transmitter and receiver antennas allow for increased data throughput through spatial multiplexing and increased range by exploiting the spatial diversity through coding schemes like Alamouti coding. The speed is 150 Mbit/s (even 250 Mbit/s in PHY level)

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A CAT5e network cable run needs to be installed over fluorescent lighting arrays in an office building. Which of the following cable types would be BEST suited for such an installation?
A. UTP
B. Plenum
C. Coaxial
D. STP

Answer: D
Explanation: Shielded twisted pair is a special kind of copper telephone wiring used in some business installations. An outer covering or shield is added to the ordinary twisted pair telephone wires; the shield functions as a ground.
Twisted pair is the ordinary copper wire that connects home and many business computers to the telephone company. To reduce crosstalk or electromagnetic induction between pairs of wires, two insulated copper wires are twisted around each other. Each signal on twisted pair requires both wires

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Which of the following wireless standards provide speeds up to 150Mbps?
A. 802.11a
B. 802.11b
C. 802.11g
D. 802.11n

Answer: D
Explanation: 802.11n builds upon previous 802.11 standards by adding multiple-input multipleoutput (MIMO). The additional transmitter and receiver antennas allow for increased data throughput through spatial multiplexing and increased range by exploiting the spatial diversity through coding schemes like Alamouti coding. The speed is 150 Mbit/s (even 250 Mbit/s in PHY level)

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Which of the following defines a rack located in an office building between the main rack and other office equipment?
A. DSU
B. MDF
C. CSU
D. IDF

Answer: D
Explanation: An intermediate distribution frame (IDF) is a distribution frame in a central office or customer premises, which cross-connects the user cable media to individual user line circuits and may serve as a distribution point for multipair cables from the main distribution frame (MDF) or combined distribution frame (CDF) to individual cables connected to equipment in areas remote from these frames.
IDFs are used for telephone exchange central office, customer-premise equipment, wide area network (WAN), and local area network (LAN) environments, among others.

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The ISP needs to terminate the WAN connection. The connection should be located in the network server room where the company LAN equipment resides. Which of the following identifies the location?
A. Smart jack
B. MDF
C. VPN
D. 66 block

Answer: B
Explanation:
Short for main distribution frame, a cable rack that interconnects and manages the telecommunications wiring between itself and any number of IDFs. Unlike an IDF, which connects internal lines to the MDF, the MDF connects private or public lines coming into a building with the internal network

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A Chief Executive Officer (CEO) decided that only a limited number of authorized company workstations will be able to connect to the Internet. Which of the following would BEST accomplish this goal?
A. Use content filtering
B. Install and configure IDS
C. Enable MAC address filtering
D. Enable RAS on the network firewall

Answer: C
Explanation:
Most Wi-Fi access points and routers ship with a feature called hardware or MAC address filtering. This feature is normally turned “off” by the manufacturer, because it requires a bit of effort to set up properly. However, to improve the security of your Wi-Fi LAN (WLAN), strongly consider enabling and using MAC address filtering.

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Multiple computers are connected to a hub near a wall plate. In order to get to the computers, students step on and around the cable that connects the teacher’s station, a few feet away, to the same hub. The teacher is experiencing no network connectivity. Which of the following is MOST likely the problem?
A. Cross-talk
B. Split cables
C. Distance
D. EMI

Answer: B
Explanation: A split cable is invisible to wire maps and continuity testers, making it very difficult to troubleshoot.

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Which of the following network topologies describes a network where each node is connected to every other node?
A. Bus
B. Star
C. Mesh
D. Ring

Answer: C
Explanation: In a true mesh topology every node has a connection to every other node in the network.

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Which of the following supports faster wireless broadband speeds?
A. Satellite
B. Wi-MAX
C. ISDN
D. OC-3

Answer: B
Explanation: Wi-MAX (Worldwide Interoperability for Microwave Access) is a wireless communications standard designed to provide 30 to 40 megabit-per-second data rates with the 2011 update providing up to 1 G bit/s for fixed stations

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Ann, a home user, wishes to confine a wireless network to devices ONLY inside of her house. Which of the following will accomplish this?
A. Decreasing radio strength
B. MAC filtering
C. WEP encryption
D. SSID broadcast disable

Answer: A
Explanation: Decreasing Radio Strength will reduce signal strength outside the house and will accomplish what she is intending to do.

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Which of the following WAN technologies has the HIGHEST latency?
A. ADSL
B. LTE
C. Satellite
D. WiMAX

Answer: C
Explanation:
Satellite WAN latency is the delay caused by the physical distance a signal must travel from earth, to the satellite, and back to earth to complete a round-trip transmission. Because of the physics involved in the round-trip-time (RTT), end-to-end latency can take 600 milliseconds or more due to geosynchronous satellites orbiting miles above the earth.

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Which of the following connectors are MOST commonly used on a POTS line?
A. RJ-45
B. MTRJ
C. DB-9
D. RJ-11

Answer: D

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Which of the following cable types is required to run through an air duct?
A. UTP
B. Fiber
C. PVC
D. Plenum

Answer: D
Explanation: Plenum rated cable has a special insulation that has low smoke and low flame characteristics.

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Which of the following technologies can cause interference for 802.11g?
A. RADAR
B. 802.11a
C. IrDA
D. Bluetooth

Answer: D

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Which of the following reduces the deployment cost of a wireless LAN?
A. WPA
B. 802.1x
C. MIMO
D. PoE

Answer: D
Explanation: Power over Ethernet or PoE describes any of several standardized or ad-hoc systems which pass electrical power along with data on Ethernet cabling.

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Which of the following is the MAXIMUM rated speed for CAT5 cabling?
A. 10Mbps
B. 100Mbps
C. 1000Mbps
D. 10Gbps

Answer: B

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``` Which of the following connector types would be found with a VoIP system utilizing CAT6 cabling? A. SC B. RJ-45 C. RJ-11 D. BNC ```

Answer: B

``` A technician notices a newly installed CAT5 cable is longer than the standard maximum length. Which of the following problems would this MOST likely cause? A. Split cable B. EMI C. DB loss D. Crosstalk ```

Answer: C Explanation: The maximum length for a cable segment is 100 m per TIA/EIA 568-5-A. If longer runs are required, the use of active hardware such as a repeater or switch is necessary.

``` Which of the following could be installed to allow a home user with one desktop computer to economically have Internet access in every room in the house? A. Fiber optic B. CAT6 C. Broadband over powerline D. CAT5 ```

Answer: C

``` Which of the following 802.11 standards transmits the signals the GREATEST distance? A. a B. b C. g D. n ```

Answer: D Explanation: 802.11n uses multiple antennas to increase data rates.

``` Which of the following fiber types is MOST often used indoors? A. Plenum B. Modal conditioning C. Multimode D. Singlemode ```

Answer: C Explanation: Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus.

``` Users are reporting wired connectivity drops in a new office with brand new CAT6 infrastructure. Which of the following tools should a technician use to BEST troubleshoot this issue? A. OTDR B. Protocol analyzer C. Toner probe D. Cable certifier ```

Answer: D Explanation: A cable certifier is an electronic device used to verify the source of electric current, voltage and a switching matrix used to connect the current source and the volt meter to all of the contact points in a cable.

``` Which of the following wireless technologies only uses the 5GHz spectrum but reaches a theoretical throughput of only 54Mbps? A. A B. B C. G D. N ```

Answer: A

``` Which of the following WAN technology types has the GREATEST latency? A. ISDN B. Fiber C. Satellite D. Cable ```

Answer: C

``` Multiple networked devices running on the same physical hardware that provide central access to applications and files, where each device runs as a piece of software are known as: A. Virtual desktops. B. Switches. C. PBXs. D. Virtual servers. ```

Answer: D

``` Which of the following is the Telco end of a T1 demarc? A. Smart jack B. Network tap C. Proxy server D. IDF ```

Answer: A Explanation: Smartjacks provides diagnostic capabilities. A very common capability provided by a smartjack is loopback, such that the signal from the telephone company is transmitted back to the telephone company.

The network administrator installed a new dipole antenna that extends 100 feet (30.48 meters) from the existing AP. All components are correct, functional, and installed properly. However, during validation, there is a very weak signal coming from the antenna. Which of the following is the MOST likely cause of the issue? A. The installation exceeds the link limitations B. The antenna is mounted for vertical polarization C. The dBi output of the antenna is too low D. The radio is too powerful for the installation

Answer: A Explanation: Unlike isotropic antennas, dipole antennas are real antennas. Dipole antennas have a different radiation pattern compared to isotropic antennas. The dipole radiation pattern is 360 degrees in the horizontal plane and 75 degrees in the vertical plane (assuming the dipole antenna is standing vertically) and resembles a donut in shape.

``` Which of the following WAN technologies uses an analog phone line to transmit data? A. LTE B. DSL C. Satellite D. Cable ```

Answer: B

``` A newly hired technician is sent to an alternate site to complete the build out of large scale LAN. Which of the following tools should the technician have on hand to install the bulk CAT6 cable? (Select TWO). A. Loopback plug B. Multimeter C. OTDR D. Crimper E. Cable tester F. TDR ```

Answer: D,E

``` 802.11n can operate at which of the following frequencies? (Select TWO). A. 2.4Mhz B. 2.5Mhz C. 5Mhz D. 2.4Ghz E. 2.5Ghz F. 5Ghz ```

Answer: D,F

``` Which of the following connector types are used in terminating singlemode fiber cables? (Select TWO). A. LC B. F-connector C. DB-9 D. BNC E. RJ-11 F. SC ```

Answer: A,F

``` Which of the following cable types supports the FURTHEST distance when connecting various MDFs? A. Multimode B. UTP C. Singlemode D. CAT6 ```

Answer: C | Single-mode optical fiber (SMF) is an optical fiber designed to carry only a single ray of light (mode).

``` Which of the following would be used to connect a singlemode fiber cable to a CAT6 connection? A. Media converter B. T1-crossover C. Multimode cable D. Coaxial ```

Answer: A

A small office client is requesting a network redesign. Both wired and wireless devices must connect to the network. All of the wireless devices can communicate using the latest standards. The building has a long courtyard in the middle with reinforced walls, which extends up through all the floors. The distance from the switch to the furthest drop is 88 meters. Which of the following is the correct network redesign choice? A. Fiber optic cabling is necessary due to distance limitations. B. The wireless network should be 802.11b due to equipment limitations. C. One WAP will be sufficient to provide wireless coverage to the floor. D. The wired network should be run with at least CAT6 cabling.

Answer: D

``` A network administrator tests a multimode fiber cable from end-to-end on a new link that is down and notices that the dB loss is -.09. Which of the following is the MOST likely cause? A. TXRX reversed B. dB loss too high C. dB loss too low D. Bad connectors ```

Answer: A

``` Which of the following wireless standards would BEST allow a company to utilize new and old devices on the 5GHz spectrum while allowing for the highest possible speeds? A. A B. B C. G D. N ```

Answer: D

``` Which of the following is the MAXIMUM potential speed of CAT5e UTP cable? A. 10BaseT B. 100BaseT C. 100BaseFX D. 1000BaseT ```

Answer: D

``` A network administrator is deploying a new wireless network with over 50 thin WAPs and needs to ensure all WAPs use consistent firmware and settings. Which of the following methods provides this functionality? A. Use WAP auto-configuration B. Use a wireless controller C. Use PXE to load and track WAPs D. Use DHCP scope options ```

Answer: B

``` While preparing to replace an old CAT3 cable with a CAT6 cable to implement VoIP, a facilities employee mistakenly disconnects the entire patch panel, including valid wiring to live workstations. Which of the following should an administrator use in order to connect those ports FIRST? A. Toner B. Multimeter C. Reflectometer D. Cable tester ```

Answer: A

``` Which of the following technologies is used on cellular networks? A. Ethernet B. CDMA C. CSMA/CA D. POTS ```

Answer: B

``` Which of the following technologies allows multiple staff members to connect back to a centralized office? A. Peer to Peer B. VPN C. PKI D. VLAN ```

Answer: B

``` Which of the following technologies is used to connect public networks using POTS lines? A. OC3 B. OC12 C. PSTN D. Cable ```

Answer: C

``` An administrator needs to install a WAP in a location where there is no electrical wiring. Which of the following should the administrator use to complete a successful installation? A. Coaxial B. Wireless bridge C. PoE D. Multimode fiber ```

Answer: C Explanation: PoE provides both data and power connections in one cable, so equipment doesn't require a separate cable for each need

``` Which of the following is the only standard that can operate at either frequency? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: D Explanation: Only 802.11n can operate at 2.4 Ghz and 5Ghz

``` Which of the following wireless standards provide speed of 11Mbps? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

``` Answer: B Explanation: 802.11a - 54Mbps - OFDM 802.11b - 11Mbps - DSSS 802.11g - 54Mbps - OFDM/DSSS 802.11n - 150/300Mbps (MIMO) – OFDM ```

``` Which of the following WAN technologies has synchronous up/down speeds? A. T1 B. ADSL C. Satellite D. Cable broadband ```

Answer: A

``` Which of the following can operate on BOTH the 2.4GHz and 5.8GHz frequencies? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: D

``` Which of the following standards can operate at 40MHz channel spacing? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: D

``` Which of the following cable types is unshielded? A. STP B. Twinax C. UTP D. Coax ```

Answer: C

``` Which of the following wireless standards can transmit data up to 540Mbps? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: D

``` A consultant has been hired to wire a simple small office of ten computers to a layer 2 Ethernet 100BaseT switch. Which of the following cabling will be needed for the installation? A. Multimode fiber B. RG-59 coaxial C. CAT6a D. CAT3 ```

Answer: C

``` The network technician is troubleshooting a connectivity issue on a CAT5 cable with a wire map and notices that only pins 1, 3, and 6 are mapping correctly. Which of the following pins are open and keeping traffic from flowing correctly? A. 2 B. 4 C. 5 D. 8 ```

Answer: A

``` Which of the following wireless standards can operate on the same frequency but are not compatible? A. 802.11a / 802.11b B. 802.11a / 802.11n C. 802.11b / 802.11g D. 802.11g / 802.11n ```

Answer: B

``` Which of the following is a fiber connector that is slightly smaller than a standard copper network cable connector? A. BNC B. GBIC C. MT-RJ D. SC ```

Answer: C

``` Which wireless standard works at a MAXIMUM data rate of up to 11Mbps? A. 802.11a B. 802.11b C. 802.11g D. 802.1q ```

Answer: B

``` Which of the following is the radio frequency and data rate for 802.11g as specified by the IEEE standards? A. 2.0 GHz at 33 Mbps B. 2.4 GHz at 54 Mbps C. 2.4 GHz at 128 Mbps D. 5.0 GHz at 54 Mbps ```

Answer: B

``` The unit responsible for the successful shaping and transmission of a digital signal is called: A. demarc. B. T1 hub. C. smart jack. D. CSU/DSU. ```

Answer: D

``` In the event of a fire in an office building, which of the following cable types should be installed to prevent toxic gas from burning PVC cable coatings? A. CAT6a B. Plenum C. Crossover D. STP ```

Answer: B

``` Which of the following 802.3 classifications has a MAXIMUM segment distance of 984 feet (300 meters)? A. 1000Base B. 100BaseFX C. 1000BaseSX D. 1000BaseT ```

Answer: C

``` Which of the following is a fiber connector type? A. F-connector B. RJ-11 C. RS-232 D. MTRJ ```

Answer: D

``` Which of the following is MOST likely used with RG-6 media? A. MTRJ B. RJ-11 C. RJ-45 D. F-connector ```

Answer: D

``` A technician can increase the bandwidth of an 802.11n cell by: A. doubling the channel width. B. enabling diversity. C. disabling MIMO. D. adding a second access point. ```

Answer: A

``` Which of the following is a requirement for bridging with 802.11a? A. WPA encryption B. Governmental licenses C. High gain yagi antennas D. Clear line of sight ```

Answer: D

``` Which of the following technologies can change channel widths? A. 802.11a B. 802.11b C. 802.11n D. Bluetooth ```

Answer: C

``` Which of the following is a common LAN protocol used for a SOHO? A. ATM B. DSL C. Ethernet D. HDLC ```

Answer: C

``` A technician needs to setup an Internet connection for a small office. There are five users that need the ability to use email and do online research. The office manager wants the connection to be always on and be as inexpensive as possible. Which of the following would BEST fit the needs of this office? A. Broadband B. T1 C. Frame Relay D. Satellite ```

Answer: A

``` The network technician needs to install fiber cabling to connect two buildings less than 984 feet (300 meters) apart. Which of the following fiber types should be installed? A. Singlemode B. Multimode C. Crossover D. F-Connector ```

Answer: B

``` Which of the following types of connectors is used with a CAT6 Ethernet cable? A. RJ-45 B. BNC C. RJ-11 D. DB-9 ```

Answer: A

``` Which of the following wireless standards is the only one capable of operating in any of the 802.11 wireless spectrums? A. A B. B C. G D. N ```

Answer: D

``` Which of the following WAN technologies has the highest latency? A. POTS B. Cable C. Satellite D. DSL ```

Answer: C

``` The network administrator just upgraded all of the WAPs to new ones with 2.4 GHz b/g/n support. The new WAPs reuse the same location and channel as the previous one and with no new external interference detected. However, performance issues are now occurring that did not exist before. Which of the following would correct the issue? A. Configure Wi-Fi Multimedia support B. Use only 20 MHz channel bandwidth C. Enable band steering to use 802.11n D. Configure Quality of Service ```

Answer: B

``` A user has three different subnets in an office. Which of the following can be configured to allow two of the subnets to communicate directly with each other at the switch level? A. 802.1af B. 802.1q C. 802.1x D. 802.2 ```

Answer: B

A technician has two wireless 802.11g APs. One is set to channel 1 and the other channel 6. The APs appear to interfere with each other. Which of the following is MOST likely the reason? A. Channels below 9 overlap each other B. Channel width is set to 40MHz C. Channels are in the 5GHz range by mistake D. Channel 1 should have been set to 11 to avoid an overlap

Answer: B

``` Which of the following are standard fiber cable connector types? (Select TWO). A. RJ-11 B. F-connector C. MTRJ D. DB-9 E. ST ```

Answer: C,E

``` A user would like to connect two laptops together and transfer files via the Ethernet ports. Which of the following should MOST likely be provided to the user to accomplish this? A. Crossover B. Rollover C. Loopback D. Straight cable ```

Answer: A

``` The phone company has provided a channelized T1 line. Which of the following should this line be connected to? A. Switch B. CSU/DSU C. IDF D. MDF ```

Answer: B

``` Which of the following spreads out each of the individual wires of a UTP cable onto their own metal connector? A. BNC connection B. 110 block C. Plenum D. LC connector ```

Answer: B

``` Which of the following WAN technologies utilizes an optical SONET carrier and has a maximum bandwidth of 155.54Mbps? A. DS3 B. E3 C. OC3 D. T3 ```

Answer: C

``` A large corporate office is looking to place smaller network closets around campus to handle switching for remote workstations. To which of the following is this referring? A. MDF B. VPN C. RDP D. IDF ```

Answer: D

``` Which of the following cables supports 10Gbps throughput and 100 meters as the maximum distance? A. T1 crossover B. Singlemode fiber C. CAT6a D. Coaxial ```

Answer: C

``` Which of the following network topologies is ONLY possible between two users? A. Star B. Client-server C. Hybrid D. Peer-to-peer ```

Answer: D

``` A technician is installing an 802.11n network. The technician is using a laptop that can connect at a maximum speed of 11 Mbps. The technician has configured the 802.11n network correctly but thinks it could be the type of WLAN card used on the laptop. Which of the following wireless standards is the WLAN card MOST likely using? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: B

``` A company recently added an addition to their office building. A technician runs new plenum network cables from the switch on one side of the company's gymnasium 80 meters (262 ft.) to the new offices on the other side, draping the wires across the light fixtures. Users working out of the new offices in the addition complain of intermittent network connectivity. Which of the following is MOST likely the cause of the connectivity issue? A. dB loss B. Distance C. Incorrect connector type D. EMI E. Crosstalk ```

Answer: D

``` Which of the following characteristics allows an 802.11g WAP to have transfer speeds up to 108Mbps? A. MIMO technology B. Channel bonding C. Encryption type D. Frequency ```

Answer: B

``` Which of the following cable types is MOST commonly used with POTS? A. CAT3 B. Multimode C. CAT6 D. Coaxial ```

Answer: A

``` Which of the following technologies prevents network collisions to maximize safe delivery of network data? A. CSMA/CA B. DWDM C. RADIUS D. SONET ```

Answer: A

``` A company is connected to an ISP, but owns the premise router with an internal CSU/DSU. Which of the following is considered the demarc? A. Premise router B. ISP router C. Smart jack D. CSU/DSU ```

Answer: C

``` An administrator has added four switches to a campus network. The switch in wiring closet A is only connected to the switch in wiring closet C. The switch in wiring closet B is connected to the switch in wiring closet C as well as wiring closet D. The switch in wiring closet D is only connected to the switch in wiring closet B. Which of the following topologies is represented in this design? A. Ring B. Star C. Bus D. Mesh ```

Answer: C

``` Which of the following cable types is employed to protect against interference in the physical environment or when security is a concern? A. STP B. RG-6 C. Fiber D. RG-59 ```

Answer: C

``` Which of the following is a common connector used on a coaxial cable? A. RJ-45 B. DB-25 C. BNC D. LC ```

Answer: C

``` At which of the following locations does the responsibility of a Telco provider cease? A. IDF B. CSU C. Demarc D. MDF ```

Answer: C

``` Which of the following cables has a hard plastic cross inside the cable to separate each pair of wires? A. Coaxial B. CAT3 C. CAT5 D. CAT6a ```

Answer: D

``` Which of the following connectors is used on a coaxial cable? A. F B. LC C. RJ-11 D. ST ```

Answer: A

``` Frequency, channel bonding, and MIMO configuration are all characteristics of which of the following networking technologies? A. Wi-Fi B. SONET C. T1/E1 Internet D. Satellite Internet ```

Answer: A

``` A small office needs to connect one new system to their network in a distant office, but does not have the resources to install a new Ethernet wall jack, and does not want to use wireless. Which of the following is a simple, cost effective option for providing connectivity? A. SONET B. Multimode fiber C. 802.11n D. Broadband over Power Line ```

Answer: D

``` Which of the following defines the pinout of an 8P8C eight pin modular jack for a CAT6a cable? A. 568B B. RJ-11 C. RJ-45 D. RS-232 ```

Answer: A

``` Which of the following WAN technologies has a MAXIMUM speed of 155.52Mbps? A. OC-3 B. T3 C. OC-12 D. E1 ```

Answer: A

``` A technician is troubleshooting a problem where data packets are being corrupted. Which of the following connectivity problems should the technician check? A. Attenuation B. Latency C. Crosstalk D. External interference ```

Answer: C

``` A technician is not getting a link light on two switches connected by a fiber cable. After the cable tests good, which of the following should the technician check NEXT? A. Open shorts B. Excessive DB loss C. TXRX reversed D. Split cables ```

Answer: C

``` Which of the following is a square shaped fiber connector that is slightly smaller than a standard copper network cable connector? A. BNC B. FSMA C. MT-RJ D. ST ```

Answer: C

``` Which of the following wiring distribution is used to connect wiring from equipment inside a company to carrier cabling outside a building? A. 66 block B. IDF C. MDF D. Patch panel ```

Answer: C

``` Which of the following is used for SONET connections and requires a wavelength of 1310nm? A. 10GBASECX4 B. 10GBASELX4 C. 10GBASELW D. 10GBASESR ```

Answer: C

``` Which wireless standard works at a MAXIMUM data rate of up to 54Mbps? A. 802.11b B. 802.11g C. 802.11n D. 802.1q ```

Answer: B

``` Which of the following network topologies describes a network where each node is connected to multiple devices? A. Mesh B. Bus C. Star D. Ring ```

Answer: A

``` The cost of installing fiber cable in a factory environment is too high. Which of the following cables should be used to minimize the effect of EMI? A. CAT6 B. UTP C. Coaxial D. Crossover ```

Answer: C

``` Which of the following is rated for speeds over 800Mbps? A. Coaxial B. DB-9 C. CAT6 D. CAT5e ```

Answer: C

``` Which of the following is a packet switching WAN technology? A. Frame relay B. T1 C. Asynchronous transfer mode D. ISDN ```

Answer: A

``` Which of the following wireless standards has a MAXIMUM speed of only 1Mbps? A. IrDA B. 802.11b C. Bluetooth D. 802.11g ```

Answer: C

``` Which of the following connector types is only used with copper media? A. ST B. SC C. MTRJ D. DB-9 ```

Answer: D

``` Which of the following is MOST commonly used with a fiber-optic network backbone? A. 100BaseFX B. 100BaseT C. 100BaseTX D. 1000BaseCX ```

Answer: A

``` Which of the following technologies has more non-overlapping channels to utilize in a wireless LAN? A. 802.11a B. 802.11b C. 802.11i D. Bluetooth ```

Answer: A

``` Which of the following is used to allow multiple sources on a single optical cable? A. HSPA+ B. MIMO C. DWDM D. SONET ```

Answer: C

``` Which of the following cables would BEST be used to extend a network through an 80 feet (262 meters) machine shop that has many high voltage machines and generators running? A. CAT5 B. CAT6 C. Coaxial D. Fiber ```

Answer: D

``` Which of the following wiring components is used as a central point of termination for all network jacks through a building area? A. Demarc B. CSU C. Patch Panel D. Smart Jack ```

Answer: C

``` Which of the following network topologies is MOST commonly used by online file sharing websites? A. Point to multipoint B. Peer-to-peer C. Ring D. Hybrid ```

Answer: B

A SOHO company just installed new 802.11a wireless APs. All company laptops have gigabit LAN ports along with wireless-g cards. Which of the following is the issue with this setup? A. The laptops will have a max wireless speed of 300Mbps B. The wired network is likely not backwards compatible with the gigabit LAN ports on the laptops C. The wireless system will only function at a slow 11Mbps D. The laptops are only capable of functioning on 2.4GHz spectrum

Answer: D

``` A technician installs a new CAT6 cable from one end of the office building to another, a total distance of 600 feet (182.88 meters). When a laptop is connected to the cable, it cannot connect to the Internet. Which of the following is MOST likely the cause of this problem? A. Bad connectors B. Crosstalk C. DB loss D. TXRX reversed ```

Answer: C

``` Which of the following do 802.11 networks use to handle packet collisions from multiple nodes? A. CSMA/CA B. CSU/DSU C. Ethernet Tokens D. CSMA/CD ```

Answer: A

``` A user needs maximum distance in a wireless connection. Which of the following should be configured to meet this goal? A. 802.11a at 54Mbps B. 802.11b at 1Mbps C. 802.11g at 11Mbps D. 802.11n at 130Mbps ```

Answer: B

``` Which of the following types of cables would be used to connect a hub to a patch panel? A. Straight-through cable B. Crossover cable C. T1 Crossover cable D. Rollover cable ```

Answer: A

``` Which of the following network topologies would be the BEST choice in providing network redundancy for an organization? A. Star B. Hybrid C. Mesh D. Point to Point ```

Answer: C

``` Which of the following WAN technology types are mainly used over POTS lines to provide Internet connectivity? (Select TWO). A. Dialup B. DSL C. SONET D. Cable E. WiMAX F. LTE ```

Answer: A,B

``` Which of the following connector types is MOST commonly used for serial connections? A. MTRJ B. RJ-11 C. RS-232 D. RJ-45 ```

Answer: C

``` Which of the following 802.11 standards can operate at both 2.4Ghz and 5.0Ghz? A. a B. b C. g D. n ```

Answer: D

``` Which of the following cable types use pins 1 and 2 to transmit and 3 and 6 to receive? A. Coaxial B. Crossover C. Multimode fiber D. Straight-though ```

Answer: D

``` Which of the following wireless standards has a maximum rate of less than 50 Mbps? A. 802.11a B. 802.11b C. 802.11g D. 802.11n ```

Answer: B

``` A technician is tasked with replacing some older RS-232 serial printers. Which of the following ports would the technician most likely find on these printers? A. BNC B. DB-9 C. LC D. RJ-11 ```

Answer: B

A technician is tasked with rewiring a CAT5e SOHO network with 10 existing computers. The users are currently running at 100 Mbps and would like to be upgraded to 1000 Mbps. Which of the following should the technician do FIRST? A. Upgrade the existing computers B. Purchase a new 802.11ac access point and install. C. Install CAT6 wiring for the SOHO network D. Verify the network cards can support 1Gbps

Answer: D

``` A technician is assigned the task of connecting two buildings 125 meters apart (410 ft.). Which of the following cable types should the technician consider? A. CAT5e Cable B. CAT5 Cable C. Plenum D. Single mode fiber ```

Answer: D

``` A technician is installing 802.11a wireless access points in an open warehouse 300 feet (91.44 meters) long and 200 feet (60.96 meters) wide. Which of the following would be the LEAST number of devices needed to provide coverage to the entire building? A. 1 B. 2 C. 3 D. 4 ```

Answer: B

``` Which of the following types of technologies should be used to provide a MAXIMUM 10 GB speed to a multi-mode fiber network? A. 10GBaseER B. 10GBaseSR C. 10GBaseTX D. 10GBaseT ```

Answer: B

``` A technician is sorting patch cables into four bins labeled coaxial, crossover, straight-through, and fiber. The technician has a cable with RJ-45 ends. The wires at one end of the cable start with an orange-white wire, while the wires at the other end of the cable start with a green wire. Into which of the following bins should this cable be placed? A. Crossover B. Fiber C. Straight-through D. Coaxial ```

Answer: A

``` An 802.11a wireless network is functioning at which of the following frequencies? A. 1.0 GHz B. 1.5 GHz C. 2.4 GHz D. 5.0 GHz ```

Answer: D

``` An 802.11b wireless network has a maximum data rate of: A. 11 Mbps. B. 20 Mbps. C. 28 Mbps. D. 54 Mbps. ```

Answer: A

``` CAT6 has how many twisted copper pairs? A. 2 B. 4 C. 6 D. 8 E. 16 ```

Answer: B

``` A cable with visible space between the ends of the copper wires and the RJ-45 connector will cause which of the following problems to occur? A. EMI B. Short C. Reversed TXRX D. dB loss ```

Answer: B

``` Which of the following connector types would require a punch down tool to attach a network cable to it? A. F-connector B. ST C. 110 block D. RJ-45 ```

Answer: C

``` Which of the following connectors is used for coaxial copper cable? A. BNC B. DB-9 C. RJ-11 D. ST ```

Answer: A

``` Which of the following network media connectors can use a MAXIMUM of two copper wire pairs? A. F-connector B. RJ-11 C. MTRJ D. RJ-45 ```

Answer: B

``` Which of the following is the MAXIMUM data transmission rate of 802.11a? A. 8Mbps B. 11Mbps C. 54Mbps D. 107Mbps ```

Answer: C

Which of the following would be considered a Demarc extension? A. A patch cable connecting a cable modem with a wireless router B. Patch panel wiring C. Punch down block wiring D. Copper wire connecting the main PSTN point of entry to a wall data outlet

Answer: D

``` A VoIP system running over a wireless network link is continually being reported as choppy. Which of the following is the cause of this issue? A. Frequency B. Latency C. Interference D. Encryption type ```

Answer: B

``` A technician testing an Ethernet card uses a cable wired with pins 1,2 to pins 3,6 on the same RJ-45 plug. Which of the following describes what the technician is using? A. RS-232 B. Rollover cable C. Loopback D. Point to point cable ```

Answer: C

``` Which of the following network topologies is MOST likely used in remote access VPN? A. Point to Point B. Bus C. Ring D. Mesh ```

Answer: A

``` A user’s network connection is slow. After testing the cabling, the cable tester shows that only pins 1, 2, 3 and 6 are being used. After accurately terminating both ends, the tester displays the same results. Which of the following is the MOST likely cause? A. DB loss on the cable B. Interference C. Split cable D. Distance limitations ```

Answer: C

``` A technician has been called about intermittent connectivity near IDF 2. Multiple cables were recently pulled through a common conduit. Which of the following is MOST likely the cause of the problem? A. Crosstalk B. Bad connectors C. Wrong DNS D. Duplicate IP address ```

Answer: A

``` A network administrator wants to balance the amount of data between two networking cards. Which of the following can be used for two or more networking cards? A. NIC bonding B. Proxy server C. Firewall ACLs D. VLANs ```

Answer: A

``` Which of the following allows 802.11n higher transfer speeds than the previous wireless standards? A. Dual frequency B. Enhanced encryption C. MIMO technology D. Backwards compatibility ```

Answer: C

``` A network administrator needs to ensure there is no same channel interference for an 802.11n deployment with four WAPs. Which of the following channel setting configurations meets this criteria when using 40 MHz channels? A. 36, 40, 44, 48 B. 36, 44, 52, 60 C. 36, 44, 48, 52 D. 36, 48, 60, 64 ```

Answer: B

``` In a small office environment, one computer is set up to provide Internet access to three other computers that are not interconnected. This is an example of which of the following topology types? A. Peer-to-peer B. Point-to-multipoint C. Hybrid D. Point-to-point ```

Answer: B

Which of the following is true of a client/server topology? A. Virtual servers are used to stream data to other remote servers B. Servers are used to connect to centralized clients C. Remote clients connect to a centralized server D. Remote clients connect to each other via a virtual server

Answer: C

``` MIMO technology in the 802.11n standard provides for which of the following benefits? A. Channel expansion B. Gigabit wireless bandwidth C. Multipath support D. Channel bonding ```

Answer: C

Topic 3: Network Media & Topologies Flashcards

(160 cards)