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Chap 5 and 6 Quiz
immense physical, emotional, and spiritual pain.
| Question | Answer |
|---|---|
| T/F: A serial cable with an RJ-45 connector is capable of being used through an RJ-45 Ethernet port. | False |
| T/F: Multimode fiber contains a core that is larger than a single mode fiber core. | True |
| T/F: A continuity tester should not be used on a live network segment. | True |
| T/F: In order to achieve 1000Base-T over CAT5e cable, 2 pairs of copper are needed. | False |
| T/F: The ST and SC fiber connectors are the most commonly found connectors due to their smaller sizes. | False |
| T/F: A time domain reflectometer sends a signal and analyzes the return signal's change in amplitude to determine where cable imperfections may exist. | True |
| T/F: Latency on data networks is based on a calculation of a packet's round trip time (RTT). | True |
| T/F: RG-59 is more expensive than RG-6, but has better resistance to attenuation. | False |
| T/F: A short circuit is one where needed connections are missing, such as when a wire breaks. | False |
| T/F: A wavelength mismatch occurs when transmissions are optimized for one type of cable but sent over a different type of cable. | True |
| What is the minimum category of UTP cable required in order to support Gigabit speeds? | Cat 5e |
| What is the maximum supported throughput of a CAT6 cable? | 10 Gbps |
| PoE+ devices are defined by what IEEE standard? | 802.3at |
| Both 10GBase-ER and 10GBase-EW have what maximum distance limitation on a segment of single mode fiber? | 40km |
| Which statement accurately describes what near end crosstalk (NEXT) is? | NEXT is crosstalk that occurs between wire pairs near the source of a signal. |
| What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment? | coarse wavelength division multiplexing |
| A junior administrator is having issues connecting to a router's console port using a TIA/EIA 568B standard cable and a USB serial to RJ-45 adapter, despite verifying terminal settings. What is the issue? | The cable must be a rollover cable. |
| Noise that can degrade or distort a signal on a network is measured with what unit? | decibels |
| What statement describes a transmission flaw that is occurring due to attenuation? | A customer modem is continuously losing signal due to large distance from the transmitting device. |
| Utilizing time slots that are adjusted according to priority and need is an example of what type of multiplexing on copper lines? | statistical time division multiplexing |
| In a coaxial cabling, what does the RG rating measure? | The materials used for shielding and conducting cores. |
| You have been awarded a contract for wiring a new federal building. What twisted-pair wiring standard must you use? | TIA/EIA 568A |
| A Fast Ethernet connection utilizes what pins on an RJ-45 plug? | 1, 2, 3, 6 |
| When terminating an Ethernet cable, about how far should the cable sheath extend into the plug? | 3/8 inch |
| What is the fastest Ethernet standard that can possibly be used on twisted-pair cabling? | 10GBase-T |
| Which of the following statements about fiber-optic cabling is accurate? | Light experiences virtually no resistance when traveling through glass. |
| A typical fiber termination kit should include what tool for cutting a clean slice through fiber strands? | fiber cleaver |
| What is the industry standard angle for an Angle Polished Connector (APC)? | 8 degrees |
| You've been handed a fiber with a 1.25-mm ferrule that requires a connector. What is the most commonly used connector for this ferrule size? | local connector (LC) |
| Which of the following statements correctly describes the SFP+ transceiver? | SFP+ is the same size as SFP, and supports a theoretical maximum transmission speed of 16 Gbps. |
| The 1000Base-LX utilizes light with what wavelength? | 1300 nanometers |
| What kind of tool can you use to measure voltage on a cable length? | multimeter |
| Why should you terminate coaxial cable with connectors that are rated for the exact cable type? | A mismatched connector will have different impedance ratings, causing data errors. |
| When viewing the pinout for T568B, what is the correct order of wire colors, starting at pin 1? | white/orange, orange, white/green, blue, white/blue, green, white/brown, brown |
| Telephone connections follow what registered jack standard? | registered jack 11 (RJ-11) |
| What statement regarding the Power Over Ethernet standards is inaccurate? | Power over Ethernet requires CAT6 or better copper cable. |
| Bidirectional transceivers utilize what technology to separate the data in each direction? | wavelength division multiplexing |
| Signals that can travel in only one direction on a medium are referred to as what type of signal? | simplex |
| What statement correctly describes "jitter"? | Jitter is what happens when packets experience varying amounts of delay and arrive out of order. |
| Broadband cable Internet service and cable TV are most commonly delivered over long distances via what type of cable? | RG-6 |
| T/F: All wireless signals are carried through the air by electromagnetic waves. | True |
| T/F: NFC tags are very expensive and cannot be purchased blank, requiring them to be pre-loaded. | False |
| T/F: The Wi-Fi Protected Setup PIN can be easily cracked through a brute force attack. | True |
| T/F: Infrared technology utilizes an LED that emits light with shorter wavelengths than red light. | False |
| T/F: The most secure Wi-Fi communication is made possible by combining a RADIUS server with WPA or WPA2, known as WPA-Enterprise or WPA2-Enterprise, respectively. | True |
| T/F: Due to many vulnerabilities and a short key length, the WPA security standard was replaced with WEP. | False |
| T/F: The Wireless Personal Area Network (WPAN) is defined in the 802.15 standard. | True |
| T/F: Z-Wave transmissions have a range of up to 50m per hop, and can tolerate up to 8 hops through repeaters. | False |
| T/F: An 802.11 data frame contains four address fields, in contrast to the two address fields in 802.3 Ethernet. | True |
| T/F: The LLC sublayer is primarily concerned with managing MAC addresses in message frames. | False |
| Diffraction has what affect on a wireless signal's propagation? | The signal is split into secondary waves that continue in the direction in which they split. |
| How does refraction affect the propagation of a wireless transmission? | It distorts the signal as it travels into and through a different transmission medium. |
| In Linux, what command can be used for viewing and setting wireless interface parameters? | iwconfig |
| At what layer of the OSI model do the 802.11 standards vary? | Physical layer |
| What special signal is issued periodically from an AP and contains the network transmission rate and service set identifier (SSID), as well as other information needed for a computer to associate with the AP? | beacon frame |
| In IEEE terminology, a group of stations that share an access point are said to be part of which of the following? | basic service set |
| What 802.11 frame type is involved in association and reassociation, including probe and beacon frames? | management frames |
| Which 802.11 frame type is related to medium access and data delivery, and includes ACK and RTS/CTS frames? | control frames |
| How does the 802.11 data frame indicate how a large packet should be fragmented? | The sequence control field indicates how packets will be subdivided. |
| The use of multiple antennas on an access point to issue a signal to one or more receivers is enabled by what 802.11 innovation? | multiple input-multiple output (MIMO) |
| In an 802.11 data frame, what is the size of the frame check sequence field? | 6 bytes |
| How many data streams are used in 802.11ac Wave 2 devices? | 4 data streams |
| The wireless spectrum, as defined by the FCC, spans between which two frequencies? | 9 kHz and 300 GHz |
| The 802.11 standard specifies the use of what technique in order to minimize the potential for collisions? | Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) |
| 802.11ac Wave 2 devices can theoretically support how much maximum throughput? | 3.47 Gbps |
| A wireless node that is in active scanning mode transmits what special type of frame in order to find available access points? | probe frame |
| What type of device can be used to assess the quality of a wireless signal? | spectrum analyzer |
| What scenario describes an evil twin attack? | A malicious access point is configured with the SSID of a non-malicious public access point. |
| Which Bluetooth power class allows for a maximum power output of 100 mW and a range of up to 100 m? | Class 1 |
| Healing messages are a feature of what smart home protocol? | Z-Wave |
| When using RFID, what is an ARPT (Active Reader Passive Tag)? | It is a tag that is activated by an active reader, and uses power from the reader's radio to power its transmission. |
| Near-field communication devices send data at what fixed frequency? | 13.56 MHz |
| What is the purpose of the Layer 2 LLC sublayer? | It is used to handle multiplexing, flow and error control, and reliability. |
| What optional protocol can be used in 802.11 to reserve the medium for one node's use? | RTS/CTS (Request to Send/Clear to Send) |
| In an 802.11 data frame, what is the maximum amount of data that can be sent? | 2312 bytes |
| Which of the following statements regarding the 802.11ac standard is NOT accurate? | 802.11ac access points function more like a hub than a switch. |
| You are troubleshooting a client's wireless networking issue. Which of the following will prevent the client from connecting to the network? | The client has a wireless profile configured for the "campus" SSID, but the access point is broadcasting the "CAMPUS" SSID. |
| When troubleshooting wireless issues, what statement is accurate? | Access points that use overlapping channels can cause interference with each other if they are too close. |
| If you need to evaluate Wi-Fi network availability as well as optimize Wi-Fi signal settings and identify security threats, what tool should you use? | Wi-Fi analyzer |
| Upon connecting to a Wi-Fi network, you're redirected to a login screen and a request to accept terms of service before being connected. What is this an example of? | captive portal |
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TheGoldenCPU
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