CompTIA JK0-019 Online Practice Questions and Exam Preparation

CompTIA JK0-019 Online Questions & Answers

• Question 221:

  Which of the following is the MAXIMUM potential speed of CAT5e UTP cable?

  A. 10BaseT
  B. 100BaseT
  C. 100BaseFX
  D. 1000BaseT
  D. 1000BaseT

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  Category 5 e cable (Cat 5) 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, 100BASE-TX (Fast Ethernet), and 1000BASE-T (Gigabit Ethernet).

• Question 222:

  Which of the following features will a firewall MOST likely use to detect and prevent malicious traffic on the network?

  A. Zone filtering
  B. Signature identification
  C. Port identification
  D. Port scanner
  B. Signature identification

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  Signature-based detection really is more along the lines of intrusion detection than firewalls. However, many personal firewalls and some corporate firewalls contain this functionality. Essentially, the system can be configured to look for specific patterns, known to be malicious, and block the traffic

• Question 223:

  Which of the following defines a rack located in an office building between the main rack and other office equipment?

  A. DSU
  B. MDF
  C. CSU
  D. IDF
  D. IDF

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  An intermediate distribution frame (IDF) is a distribution frame in a central office or customer premises, which cross-connects the user cable media to individual user line circuits and may serve as a distribution point for multipair cables from the main distribution frame (MDF) or combined distribution frame (CDF) to individual cables connected to equipment in areas remote from these frames.

  IDFs are used for telephone exchange central office, customer-premise equipment, wide area network (WAN), and local area network (LAN) environments, among others.

• Question 224:

  Which of the following ports would have to be allowed through a firewall for NTP to pass on its default port?

  A. 123
  B. 143
  C. 153
  D. 163
  A. 123

• Question 225:

  Which of the following OSI model layers are present in the application layer of the TCP/IP model? (Select TWO).

  A. Data Link
  B. Transport
  C. Network
  D. Session
  E. Presentation
  D. Session
  E. Presentation

• Question 226:

  In order to discover the currently unknown IP address of the next-hop router, a network administrator would begin by using which of the following tools?

  A. NMAP
  B. ping
  C. nslookup
  D. tracert
  D. tracert

• Question 227:

  Which of the following describes a manually entered route?

  A. Static
  B. Dynamic
  C. Multicast
  D. Unicast
  A. Static

• Question 228:

  A technician needs to make a web server with a private IP address reachable from the Internet. Which of the following should the technician implement on the company firewall?

  A. DOCSIS
  B. NAT
  C. CIDR
  D. VPN
  B. NAT

• Question 229:

  Which of the following is used to limit the amount of bandwidth used on a link for different applications to improve overall performance?

  A. QoS
  B. Fault tolerance
  C. Load balancing
  D. Traffic shaping
  D. Traffic shaping

• Question 230:

  Which of the following would be the BEST solution for an IDS to monitor known attacks?

  A. Host-based
  B. Signature-based
  C. Network-based
  D. Behavior-based
  B. Signature-based

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  Signature detection involves searching network traffic for a series of bytes or packet sequences known to be malicious. A key advantage of this detection method is that signatures are easy to develop and understand if you know what network behavior you're trying to identify.