comptia jk0-019 practice test

Which of the following protocols occurs at Layer 4 of the OSI model?

• A. ISDN
• B. IPX
• C. GRE
• D. UDP

The protocol SNMP uses which of the following ports by default?

• A. 53
• B. 61
• C. 67
• D. 161

The network technician is working in an office that has both VoIP telephone lines and analog lines. A user states that the fax
machine is not sending or receiving faxes. The network technician determines that the fax machine uses an analog phone
line. Which of the following tools would the technician use to troubleshoot the issue?

• A. Cable tester
• B. Buttset
• C. Toner probe
• D. Cable certifier

A technician is troubleshooting a desktop computer that will not power on. After replacing the power supply, the technician
tries to start the desktop, but it still fails to power on. Which of the following troubleshooting steps should the technician do
NEXT?

• A. Question users to determine if anything has changed
• B. Re-establish theory of probable cause
• C. Escalate problem to upper management
• D. Document replacement of power supply

Which of the following provides RSA encryption at the session layer?

• A. SSH
• B. ISAKMP
• C. SSL
• D. TLS

There has been an increase in Help Desk tickets related to web portal user accounts being locked out. Which of the following
resources would be used to analyze the issue?

• A. Router logs
• B. Protocol analyzer
• C. Firewall logs
• D. Application logs

A network technician is configuring a new firewall for placement into an existing network infrastructure. The existing network
is connected to the Internet by a broadband connection. Which of the following represents the BEST location for the new
firewall?

• A. The firewall should be placed between the Internet connection and the local network.
• B. The firewall should be placed inside the local network.
• C. The firewall should be placed between the broadband connection and the Internet.
• D. The firewall should be placed in the Internet cloud.

At which of the following layers do frames exist? (Select TWO).

• A. OSI model Data link layer
• B. TCP/IP model Network Interface layer
• C. OSI model Physical layer
• D. OSI model Network layer
• E. TCP/IP model Internet layer

A small office has created an annex in an adjacent office space just 20 feet (6 meters) away. A network administrator is
assigned to provide connectivity between the existing office and the new office. Which of the following solutions provides the
MOST security from third party tampering?

• A. CAT5e connection between offices via the patch panel located in building’s communication closet.
• B. CAT5e cable run through ceiling in the public space between offices.
• C. VPN between routers located in each office space.
• D. A WEP encrypted wireless bridge with directional antennae between offices.

A technician needs to ensure that traffic from a specific department is separated within several switches. Which of the
following needs to be configured on the switch to separate the traffic?

• A. Duplex settings
• B. SNMP string
• C. VLAN assignments
• D. Spanning tree