CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 431:

  Which of the following types of technologies should be used to provide a MAXIMUM 10 GB speed to a multi-mode fiber network?

  A. 10GBaseER
  B. 10GBaseSR
  C. 10GBaseTX
  D. 10GBaseT
  B. 10GBaseSR

• Question 432:

  The application layer in the TCP/IP model is comparable to which of the following layers in the OSI model?

  A. Layer 2
  B. Layer 5
  C. Layer 6
  D. Layer 7
  D. Layer 7

• Question 433:

  Which of the following copper cable types should be chosen to run gigabit speeds through a dropped ceiling that returns airflow?

  A. Non-Plenum CAT5
  B. Non-Plenum CAT5e
  C. Plenum CAT5
  D. Plenum CAT5e
  D. Plenum CAT5e

  ---

  Cat 5e is a twisted pair cable for carrying signals. This type of cable is used in structured cabling for computer networks such as Ethernet. The cable standard provides performance of up to 100 MHz and is suitable for 10BASE-T, 100BASETX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet).

• Question 434:

  Which of the following will BEST block a host from accessing the LAN on a network using static IP addresses?

  A. IP filtering
  B. Port filtering
  C. MAC address filtering
  D. DHCP lease
  A. IP filtering

  ---

  IPFilter (commonly referred to as ipf) is an open source software package that provides firewall services and network address translation (NAT) for many UNIX-like operating systems. The author and software maintainer is Darren Reed. IPFilter supports both IPv4 and IPv6 protocols, and is a stateful firewall.

• Question 435:

  The network interface layer of the TCP/IP model corresponds with which of the following layers of the OSI model? (Select TWO).

  A. Transport layer
  B. Network layer
  C. Session layer
  D. Physical layer
  E. Presentation layer
  F. Data link layer
  D. Physical layer
  F. Data link layer

  ---

  The lowest layer of the OSI Reference Model is the physical layer, which is responsible for the "nitty gritty" details of transmitting information from one place to another on a network. The layer just above the physical layer is the data link layer, called the network interface layer or just the link layer in the TCP/IP architectural model. Its primary job is to implement networks at the local level, and to interface between the hardware-oriented physical layer, and the more abstract, software-oriented functions of the network layer and those above it.

• Question 436:

  Which of the following is MOST commonly used with a fiber-optic network backbone?

  A. 100BaseFX
  B. 100BaseT
  C. 100BaseTX
  D. 1000BaseCX
  A. 100BaseFX

• Question 437:

  A small office needs to connect one new system to their network in a distant office, but does not have the resources to install a new Ethernet wall jack, and does not want to use wireless. Which of the following is a simple, cost effective option for providing connectivity?

  A. SONET
  B. Multimode fiber
  C. 802.11n
  D. Broadband over Power Line
  D. Broadband over Power Line

• Question 438:

  Which of the following wireless standards can transmit data up to 540Mbps?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.11n
  D. 802.11n

• Question 439:

  Which of the following a network technician would use to reverse engineer malware and virus?

  A. IDS
  B. VLAN
  C. Virtual Machine
  D. Switch
  C. Virtual Machine

  ---

  Virtual Machine --- even if the VM gets infected, host machine will run as normal.

• Question 440:

  Which of the following should be installed to prevent inappropriate websites from being viewed?

  A. Load balancer
  B. VPN concentrator
  C. Content filter
  D. Proxy server
  C. Content filter