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2021 Feb JK0-019 real exam

Q101. Which of the following is the MAIN purpose of a packet sniffer? 

A. To determine open ports on a server 

B. To ensure encryption is being used 

C. To analyze network traffic 

D. To prevent network intrusion 

Answer:


Q102. An administrator only has one public IP address that must be shared among five employees. Which of the following network schemes should be used? 

A. SNAT 

B. SNAP 

C. NAC 

D. MPLS 

Answer:


Q103. A company wants to secure access to its internal wireless network. The company wants to use the most secure means to access the network. Which of the following is the BEST choice for wireless security in this situation? 

A. WEP encryption 

B. Channel rotation 

C. Disable SSID 

D. WPA encryption 

Answer:


Q104. Two business partners have recently been connected via a dedicated extranet. It has been discovered that each of the companies are using the same private IP address space. Which of the following will help to resolve potential routing issues? 

A. Multicast 

B. PAT 

C. CIDR 

D. NAT 

Answer:


Q105. A switch in IDF 3 has shut down at 3 p.m. every day this week. Which of the following network tools should Karen, a technician, use to troubleshoot this problem? 

A. Environmental monitor 

B. Cable tester 

C. TDR 

D. Loopback plug 

Answer:


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Q106. A client is having problems connecting remotely after replacing a router. An administrator has just created an action plan. Which of the following is the NEXT step the administrator should perform to resolve this issue? 

A. Implement and test the solution. 

B. Determine if escalation is necessary. 

C. Identify the affected areas of the network. 

D. Identify the results and effects of the solution 

Answer:


Q107. DNS lookups for a given host are intermittently failing. Which of the following would Karen, a technician, MOST likely use to verify this problem? 

A. arp 

B. nbtstat 

C. traceroute 

D. dig 

Answer:


Q108. Which of the following WAN technologies uses a telephone cable? 

A. POTS 

B. FDDI 

C. SONET 

D. Cable modem 

Answer:


Q109. Sandy, the network technician, needs to run a cable through a power distribution room that contains a high voltage transformer. Which of the following would be used to minimize EMI interference? 

A. FTP 

B. STP 

C. UTP 

D. RTP 

Answer:


Q110. A technician would like to separate the HR department's workstations from the other workstations at the company. Which of the following network topologies should be used? 

A. Peer to peer 

B. Subnetting 

C. VLAN 

Answer: