Comptia A+ (220-801) Certification Exam Practice Test Set 4

A technician installed a new docking station for a user and they have lost the ability to connect to the network. Which of the following is the MOST likely reason?


Options are :

  • The product is not compatible
  • The network is down
  • DHCP is disabled
  • Device drivers are not loaded (Correct)

Answer : Device drivers are not loaded

A technician is asked to verify that a CAT5 patch cord, created by another technician, is in working order. Which of the following tools should the technician use to verify the patch cord?


Options are :

  • Cable tester (Correct)
  • Loopback plug
  • Toner probe
  • Multimeter

Answer : Cable tester

Which of the following would be included when documenting the MOST recent policy on corporate behavior?


Options are :

  • Page numbers
  • Author of the document
  • Last revision dates and version numbers (Correct)
  • A complete table of contents

Answer : Last revision dates and version numbers

Which of the following memory features allows for the protection against random inconsistencies in the transfer of the data?


Options are :

  • Single channel
  • ECC (Correct)
  • Low latency
  • Dual channel

Answer : ECC

A user, Ann, is experiencing headaches and motion sickness symptoms when using her new computer monitor. Which of the following can a technician adjust to help Ann?


Options are :

  • Brightness
  • Privacy filter
  • Refresh rate (Correct)
  • Use a digital signal

Answer : Refresh rate

Which of the following lists the correct non-overlapping channels in 2.4 GHz?


Options are :

  • 5, 11
  • 2, 4, 6, 8, 10
  • 1, 6, 11 (Correct)
  • 3, 6, 9

Answer : 1, 6, 11

Which of the following cable types is MOST often found in Plain Old Telephone Service (POTS)?


Options are :

  • RG-59
  • RG-6
  • CAT3 (Correct)
  • Multi-mode

Answer : CAT3

Which of the following is MOST likely to have a physical switch on a laptop that allows it to be turned off without going into the BIOS?


Options are :

  • Overclocking
  • Webcam
  • External display
  • Wireless (Correct)

Answer : Wireless

Which of the following laptop displays would provide the BEST viewing angle?


Options are :

  • Passive matrix
  • DLP
  • Plasma
  • TFT LCD (Correct)

Answer : TFT LCD

___________________ is the type of media access method used by NICs that listen to or sense the cable to check for traffic and send only when they hear that no one else is transmitting.


Options are :

  • Demand priority
  • CSMA/CD (Correct)
  • Token passing
  • CSMA/CA

Answer : CSMA/CD

What level of QoS is designated for interactive voice and video?


Options are :

  • 5 (Correct)
  • 1
  • 4
  • 6

Answer : 5

Which of the following protocols is responsible for sending email?


Options are :

  • SMTP (Correct)
  • IMAP4
  • POP3
  • SNMP

Answer : SMTP

Which of the following are valid examples of IPv6 addresses? 


Options are :

  • 2001:0db8:3c4d:0012:0000:0000:1234:56ab
  • All the above (Correct)
  • ::ffff:c0a8:173
  • 2001:db8:3c4d:12::1234:56ab

Answer : All the above

Which of the following wireless IEEE standards operate on the 2.4GHz radio frequency and are directly compatible with each other?


Options are :

  • 802.11b (Correct)
  • 802.11a
  • 802.11d
  • None of the above

Answer : 802.11b

Which of the following IP addresses would not be valid for a DNS server on the Internet?


Options are :

  • 192.186.12.2
  • 18.33.66.254
  • 155.118.63.11
  • 10.25.11.33 (Correct)

Answer : 10.25.11.33

What is the primary function of the SSID?


Options are :

  • Secure communication between a web server and browser
  • Secure communication between a server and remote host
  • A type of password used to help secure a wireless connection (Correct)
  • A type of password used to secure an Ethernet 802.3 connection

Answer : A type of password used to help secure a wireless connection

In which network design do users access resources from other workstations rather than from a central location?


Options are :

  • Peer-to-peer (Correct)
  • Ring
  • Star
  • Client-server

Answer : Peer-to-peer

Which two TCP/IP protocols work at the Host-to-Host layer of the DOD model? 


Options are :

  • both c and d (Correct)
  • UDP
  • IP
  • ARP
  • TCP

Answer : both c and d

What model is used to provide a common way to describe network protocols?


Options are :

  • CSMA/CD
  • OSI (Correct)
  • IEEE
  • ISO

Answer : OSI

Of all network cabling options, ___________________ offers the longest possible segment length.


Options are :

  • Fiber-optic (Correct)
  • Shielded twisted-pair
  • Coaxial
  • Unshielded twisted-pair

Answer : Fiber-optic

Which of the following wireless communication standards is often described in terms of a wireless personal area network?


Options are :

  • Bluetooth (Correct)
  • Infrared
  • Cellular
  • Ethernet

Answer : Bluetooth

What port does the RDP protocol work on?


Options are :

  • 3389 (Correct)
  • 53
  • 143
  • 389

Answer : 3389

The workstations on your network are configured to use a DHCP server. One of the workstations canít communicate with other computers. Its IP address is 169.254.1.18. What could be the problem?


Options are :

  • It canít reach the DHCP server. (Correct)
  • The default gateway is wrong.
  • It has a private IP address.
  • The subnet mask is wrong.

Answer : It canít reach the DHCP server.

What devices transfer packets across multiple networks and use tables to store network addresses to determine the best destination?


Options are :

  • Routers (Correct)
  • Bridges
  • Switches
  • Hubs

Answer : Routers

_____________________is immune to electromagnetic or radio-frequency interference.


Options are :

  • Fiber-optic cabling (Correct)
  • Twisted-pair cabling
  • CSMA/CD
  • Broadband coaxial cabling
  • None

Answer : Fiber-optic cabling

Which OSI layer signals ďall clearĒ by making sure the data segments are error free?


Options are :

  • Application layer
  • CSMA/CD (Correct)
  • Demand priority
  • CSMA/CA

Answer : CSMA/CD

What is the most secure wireless encryption standard for 802.11 networks?


Options are :

  • WPA2 (Correct)
  • WEP
  • SAFER+
  • WPA

Answer : WPA2

Which TCP/IP protocol uses port 80?


Options are :

  • HTTPS
  • POP3
  • HTTP (Correct)
  • Telnet

Answer : HTTP

A physical star topology consists of several workstations that branch off a central device called a __________________ .


Options are :

  • Hub (Correct)
  • NIC
  • Bridge
  • Router

Answer : Hub

What is the maximum number of IPv6 addresses that can be assigned to one IPv6 interface?


Options are :

  • None of the above (Correct)
  • Two (unicast and anycast)
  • Three (unicast, anycast, and multicast)
  • One (unicast)

Answer : None of the above

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