CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 231:

  A network administrator needs to configure a port on the switch that will enable all packets on a particular switch to be monitored. Which of the following would BEST complete this objective?

  A. Traffic shaping
  B. MAC filtering
  C. Port mirroring
  D. VLAN trunking
  C. Port mirroring

• Question 232:

  Which of the following IP address/CIDR combinations represent public address space? (Select TWO).

  A. 10.1.1.1/8
  B. 172.15.1.1/16
  C. 172.16.1.1/16
  D. 172.31.1.1/16
  E. 193.168.2.1/24
  F. 224.0.0.1/32
  B. 172.15.1.1/16
  E. 193.168.2.1/24

• Question 233:

  A user reports intermittent network connectivity. Which of the following should a technician configure on the managed switch to help troubleshoot this issue?

  A. SMTP
  B. SNTP
  C. SNMP
  D. SNAT
  C. SNMP

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  SNMP, which is widely used in local area networks (LANs), lets you monitor network nodes from a management host. You can monitor network devices such as servers, workstations, printers, routers, bridges, and hubs, as well as services such as Dynamic Host Configuration Protocol (DHCP) or Windows Internet Name Service (WINS).

• Question 234:

  A technician needs to install network device in a SOHO network. The office requires 9 wired workstations to share and print data. Which of the following can the technician use?

  A. A 12 port unmanaged switch.
  B. A wired router with an 8 port switch and a WAN port.
  C. A wireless router with an 8 port switch, and a WAN port.
  D. A 8 port firewall with one console port.
  A. A 12 port unmanaged switch.

• Question 235:

  The TCP/IP application layer contains which of the following OSI layers?

  A. Layers 1, 5, 6, 7
  B. Layers 4, 7
  C. Layers 5, 6, 7
  D. Layer 7
  C. Layers 5, 6, 7

• Question 236:

  Using source port numbers as a way to keep track of connections is a characteristic of which of the following protocols?

  A. TCP
  B. UDP
  C. NAT
  D. PAT
  D. PAT

• Question 237:

  A network technician is setting up a wireless access point that would only allow a certain laptop to be able to access the WAP. By using ACL, which of the following would be filtered to ensure only the authorized laptop can access the WAP?

  A. NetBIOS name filtering
  B. IP address filtering
  C. MAC address filtering
  D. Computer name filtering
  C. MAC address filtering

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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 238:

  A technician is trying to add another switch to the network with multiple VLANs. Which of the following should the technician configure on the interface to allow multiple VLANs?

  A. Mirroring
  B. Trunking
  C. Authenticating
  D. Bonding
  B. Trunking

• Question 239:

  The company is setting up a new website that will be requiring a lot of interaction with external users. The website needs to be accessible both externally and internally but without allowing access to internal resources. Which of the following would MOST likely be configured on the firewall?

  A. PAT
  B. DHCP
  C. DMZ
  D. NAT
  C. DMZ

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  DMZ is a physical or logical subnetwork that contains and exposes an organization's external-facing services to a larger and untrusted network, usually the Internet. The purpose of a DMZ is to add an additional layer of security to an organization's local area network (LAN); an external attacker only has access to equipment in the DMZ, rather than any other part of the network.

• Question 240:

  Which of the following is the radio frequency and data rate for 802.11g as specified by the IEEE standards?

  A. 2.0 GHz at 33 Mbps
  B. 2.4 GHz at 54 Mbps
  C. 2.4 GHz at 128 Mbps
  D. 5.0 GHz at 54 Mbps
  B. 2.4 GHz at 54 Mbps