CompTIA N10-005 Online Practice Questions and Exam Preparation

CompTIA N10-005 Online Questions & Answers

• Question 481:

  Which of the following performance optimization techniques would be MOST beneficial for a network-wide VoIP setup? (Select TWO).

  A. Proxy server
  B. Traffic shaping
  C. Caching engines
  D. Load balancing
  E. Quality of service
  B. Traffic shaping
  E. Quality of service

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  Traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result of traffic shaping is a smoothed packet output rate. QoS (Quality of Service) is a major issue in VOIP implementations. The issue is how to guarantee that packet traffic for a voice or other media connection will not be delayed or dropped due interference from other lower priority traffic.

  Things to consider are: Latency: Delay for packet delivery Jitter: Variations in delay of packet delivery Packet loss: Too much traffic in the network causes the network to drop packets Burstiness of Loss and Jitter: Loss and Discards (due to jitter) tend to occur in bursts

• Question 482:

  Which of the following records allows for reverse DNS lookups?

  A. AAAA
  B. A
  C. PTR
  D. CNAME
  C. PTR

• Question 483:

  A technician has received a trouble ticket from a user who has intermittent wireless access. Moving the computer farther from the WAP results in a more stable connection. Which of the following is MOST likely the cause of this instability?

  A. Wrong encryption type
  B. SSID mismatch
  C. Signal bounce
  D. Incorrect channel
  C. Signal bounce

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  Bouncing is the tendency of any two metal contacts in an electronic device to generate multiple signals as the contacts close or open.

• Question 484:

  Which of the following OSI model layers is used to frame packets that are sent over a medium?

  A. Session
  B. Data link
  C. Physical
  D. Transport
  B. Data link

• Question 485:

  A consultant is installing new WAPs for an office using wall mounts.

  Which of the following is the BEST location for the new boxes for signal strength and coverage?

  A. Above the suspended ceiling with antennas positioned upward.
  B. Close to the floor level to allow the signal to traverse the floor laterally.
  C. Close to the suspended ceiling, but not above.
  D. Above the suspended ceiling with antennas positioned downward.
  C. Close to the suspended ceiling, but not above.

• Question 486:

  Which of the following defines the amount of time a host retains a specific IP address before it is renewed or released?

  A. DHCP lease
  B. DNS suffix
  C. Subnet mask
  D. DHCP reservation
  A. DHCP lease

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  By default, each IP address assigned by a DHCP Server comes with a one-day lease, which is the amount of time that the address is valid.

• Question 487:

  A company has one public IP address, and only one device needs to be able to connect to the Internet at a time. Which of the following is the BEST option for connectivity?

  A. VLSM
  B. CIDR
  C. NAT
  D. PAT
  C. NAT

• Question 488:

  Users in several departments are reporting connectivity problems. The technician examines the computer and finds the following settings. The IP address is 10.0.1.0 with a subnet mask of 255.255.252.0. The default gateway is 10.0.1.1 and the DNS server is 10.0.0.15. A user can connect to the internet but not servers on other internal subnets. The technician is not able to connect with a server with an IP of 10.0.2.25.

  Which of the following is MOST likely the problem?

  A. Default gateway
  B. Duplicate IP address
  C. Wrong DNS
  D. Subnet mask
  D. Subnet mask

• Question 489:

  The day network administrator is having problems on the network and realizes that the night administrator implemented a new device that is causing broadcast traffic. Which of the following should be implemented to avoid miscommunication between the administrators?

  A. Asset management
  B. System baselines
  C. System logging
  D. Change management
  D. Change management

• Question 490:

  Which of the following is used to determine whether or not a user's account is authorized to access a server remotely?

  A. VPN
  B. RDP
  C. LDAP
  D. Encryption
  C. LDAP