CompTIA N10-005 Online Practice Questions and Exam Preparation

CompTIA N10-005 Online Questions & Answers

• Question 491:

  Which of the following IP address/subnet mask combinations represent a broadcast address? (Select TWO).

  A. 200.200.100.0/28
  B. 200.200.100.32/27
  C. 200.200.100.63/27
  D. 200.200.100.79/27
  E. 200.200.100.95/27
  F. 200.200.100.254/30
  C. 200.200.100.63/27
  E. 200.200.100.95/27

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  A broadcast address is a logical address at which all devices connected to a multiple-access communications network are enabled to receive datagrams. A message sent to a broadcast address is typically received by all network-attached hosts, rather than by a specific host.

  ReferencE. http://www.wikihow.com/Calculate-Network-and-Broadcast-Address

• Question 492:

  Which of the following is being described when symbols are displayed on the side of the building and/or walking path, to identify open hotspots?

  A. Social engineering
  B. War chalking
  C. WPA cracking
  D. Packet sniffing
  B. War chalking

• Question 493:

  At which layer of the OSI model do MAC addresses operate?

  A. Data Link
  B. Network
  C. Application
  D. Physical
  A. Data Link

• Question 494:

  Companies trying to cut down on constant documentation of IP addresses could use which of the following?

  A. Longer lease times
  B. More reservations
  C. Larger scopes
  D. Dynamic IP addressing
  D. Dynamic IP addressing

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  In Dynamic IP addressing all the hosts with private ip address will be patted to the same ip so the administrator will not have to keep track of each and every host with private ip mapped to a static public ip address.

• Question 495:

  A user receives a phone call at home from someone claiming to be from their company's IT help desk. The help desk person wants to verify their username and password to ensure that the user's account has not been compromised. Which of the following attacks has just occurred?

  A. Evil twin
  B. Phishing
  C. Man-in-the-middle
  D. Social engineering
  D. Social engineering

• Question 496:

  Which of the following is the BEST way to prevent new users from connecting to a wireless access point, but still allow already connected users to continue to connect?

  A. Create a MAC filter containing the current users.
  B. Turn off SSID broadcast.
  C. Change the encryption type to AES 256-bit for current users.
  D. Reduce the signal strength to 0 percent.
  A. Create a MAC filter containing the current users.

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  MAC Filtering (or EUI filtering, or layer 2 address filtering) refers to a security access control method whereby the 48-bit address assigned to each network card is used to determine access to the network.

  MAC addresses are uniquely assigned to each card, so using MAC filtering on a network permits and denies network access to specific devices through the use of blacklists and whitelists. While the restriction of network access through the use of lists is straightforward, an individual person is not identified by a MAC address, rather a device only, so an authorized person will need to have a whitelist entry for each device that he or she would use to access the network.

• Question 497:

  Multiple servers' IP addresses fall within the DHCP scope assigned by the administrator.

  Which of the following should be implemented to ensure these static IP addresses are not assigned to workstations?

  A. The administrator should create exclusions for the workstations IP addresses.
  B. The administrator should change the servers to utilize DHCP to obtain IP addresses.
  C. The administrator should change the workstations to utilize static IP addresses.
  D. The administrator should create exclusions for the servers IP addresses.
  D. The administrator should create exclusions for the servers IP addresses.

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  Whenever you define the ip pool from which IP addresses are to be dynamically assigned to the users then in order to avoid assignment of static ip address we can creat exclusion for the static ip addresses so that they are not assigned to any other host and this is how we can avoid ip address conflict on the network.

• Question 498:

  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
  A. RJ-45

• Question 499:

  A strong network firewall would likely support which of the following security features for controlling access? (Select TWO).

  A. War driving
  B. War chalking
  C. MAC filtering
  D. FTP bouncing
  E. Port filtering
  C. MAC filtering
  E. Port filtering

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  MAC filtering set the security level at layer 2 and port filtering will set the security level on layer 4 so by filtering the traffic on both layers our network will get secure.

• Question 500:

  An administrator is using a packet sniffer to try to determine what is causing the traffic on the network. The administrator sees a lot of packets on port 25. Which of the following traffic types is MOST likely using port 25?

  A. SMTP
  B. SSH
  C. DNS
  D. TELNET
  A. SMTP

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  Port no. 25 is assigned to smtp as documented by iana.