CNT 100 CH 3 Review Questions

How many channels can be used on an 802.11b network in North America? 7 9 11 13

11

Which Wi-Fi standard can provide the highest bandwidth? 802.11ac 802.11b 802.11n 802.11g

802.11ac

Which Wi-Fi standard uses beamforming to allow an AP to send data to multiple devices simultaneously? 802.11ac 802.11n 802.11a 802.11g

802.11ac

Which of the following is true of a MAC address? All binary 1s in the source address indicate a broadcast frame. It's sometimes called a logical address. A destination address of 12 hexadecimal Fs is a broadcast. It's composed of 12 bits.

A destination address of 12 hexadecimal Fs is a broadcast.

Which of the following describes a hub-based Ethernet network? Physical bus Logical bus Physical switching Logical star

Logical Bus

Which technology is likely to be implemented as a point-to-point physical topology? Wi-Fi infrastructure mode FDDI Ethernet Wireless bridge

Wireless Bridge

Which Ethernet standard can deliver up to 5 Gbps of bandwidth over Cat 5e and Cat 6 cabling? IEEE 802.3an 802.3ab 802.3bz 802.3u

802.3bz

Which of the following is an advantage of a star topology? (Choose all that apply.) Allows faster technologies than a bus does Requires less cabling than a bus Centralized monitoring of network traffic No single point of failure

Allows faster technologies than a bus does Centralized monitoring of network traffic

Which of the following describes the arrangement of network cabling between devices? Logical topology Networking technology Physical topology Media access method

Physical topology

Which media access method does Wi-Fi use? CSMA/CD Token bus Demand priority CSMA/CA

CSMA/CA

Which access method uses a "listen before sending" strategy? Token passing CSMA/CD Token bus Polling

CSMA/CD

Which of the following is a characteristic of fiber-optic cabling? (Choose all that apply.) Can be used in electrically noisy environments Requires only a single strand of fiber for network connections Carries data over longer distances than UTP does Lower bandwidth capability

Can be used in electrically noisy environments Carries data over longer distances than UTP does

Which of the following is true about full-duplex Ethernet? (Choose all that apply.) Stations can transmit and receive, but not at the same time. Collision detection is turned off. It's possible only with switches. It allows a physical bus to operate much faster.

Collision detection is turned off. It's possible only with switches

Which of the following is defined by the extent to which signals in an Ethernet bus topology network are propagated? Physical domain Collision domain Broadcast domain Logical domain

Collision domain

Which of the following is a characteristic of a switched logical topology? (Choose all that apply.) Uses a physical bus topology Creates dynamic connections Sometimes called a shared-media topology Uses a physical star topology

Creates dynamic connections Uses a physical star topology

Which of the following is a field of the most common Ethernet frame type? (Choose all that apply.) ARP trailer FCS Destination MAC Address Data MAC Type

Destination MAC Address FCS (Frame Check Sequence) Data

Which of the following is a characteristic of unshielded twisted-pair cabling? (Choose all that apply.) Consists of four wires Commonly used in physical bus topologies Has a distance limitation of 100 meters Susceptible to electrical interference

Has a distance limitation of 100 meters Susceptible to electrical interference

Which of the following best describes a typical wireless LAN? Logical ring topology Logical switching topology Logical bus topology Logical star topology

Logical Bus topology

Which of the following is true of IEEE 802.3an? Requires two pairs of wires Uses Category 5 or higher cabling Currently best for desktop computers Operates only in full-duplex mode

Operates only in full-duplex mode

Which topology is likely to be deployed in a WAN where there's a central office and three branch offices, and you want all traffic from the branch offices to go through the central office network? Ring PMP Mesh Point-to-point

PMP ( Point to Multipoint)

Which topology most likely uses coaxial cabling? Physical star Logical ring Physical bus Logical switching

Physical Bus

Which of the following is considered a property of Ethernet? (Choose all that apply.) Scalable Best-effort delivery system Guaranteed delivery system Obsolete technology

Scalable Best-effort delivery system

Which type of Wi-Fi signal interference is most likely to be caused by leaves on trees? Diffraction Reflection Refraction Scattering

Scattering

You're configuring a WLAN in a long, narrow ballroom. The only place you can put the AP is at the far end of the room. Which type of antenna should you use? Unidirectional Bidirectional Omnidirectional Semidirectional

Unidirectional

Which of the following is true about infrastructure mode in wireless networks? (Choose all that apply.) Best used for temporary networks Uses a central device Resembles a physical bus and logical ring Most like a logical bus and physical star

Uses a central device Most like a logical bus and physical star