Precise of JK0-019 exam materials and samples for CompTIA certification for consumer, Real Success Guaranteed with Updated JK0-019 pdf dumps vce Materials. 100% PASS CompTIA Network+ Certification Exam (JK0-019) exam Today!

2021 Jan JK0-019 free download

Q171. By default, which of the following ports would a network need to have opened to allow for the transmission of incoming and outgoing email? (Select TWO). 

A. 21 

B. 25 

C. 80 

D. 110 

E. 123 

Answer: BD


Q172. Which of the following would be used to test out the security of a specific network by allowing it to receive security attacks? 

A. Honeynet 

B. Honeypot 

C. Vulnerability scanner 

D. Network based IDS 

Answer: A 


Q173. Which of the following OSI model layers is used for logical addressing? 

A. Physical 

B. Transport 

C. Network 

D. Data link 

Answer: C 


Q174. A natural disaster has occurred and the administrator must return the network to a healthy status. Which of the following should the administrator do in this case? 

A. Follow the emergency action plan. 

B. Wait for an issue to be reported. 

C. Establish a new baseline. 

D. Determine if escalation is necessary. 

Answer: A 


Q175. The "1000" in 1000BaseT cabling represents which of the following? 

A. The theoretical maximum cable length 

B. The theoretical maximum bandwidth 

C. The theoretical port limit of the cable 

D. The quality level of the copper wiring used 

Answer: B 


Improve JK0-019 exam price:

Q176. After a baseline check was completed it was noted that the network was working far below the level of the last baseline. Which of the following should the technician do NEXT to determine where the network problems are occurring? 

A. Upgrade the firmware on all routers and switches 

B. Reboot the entire network one device at a time 

C. Conduct a network traffic analysis 

D. Rerun the baseline to ensure the results were correct 

Answer: C 


Q177. Sandy, the network administrator, has funding to do a major upgrade of the company’s LAN. This upgrade is currently in the planning stage, and Sandy still needs to determine the network requirements, bottlenecks, and any future upgrades in mind. Which of the following is the FIRST step in the planning process? 

A. Conduct a vulnerability scan 

B. Establish a network baseline 

C. Conduct traffic analysis 

D. Conduct a risk assessment 

Answer: B 


Q178. Joe, a customer, has reported that the wireless signal from a WAP can only be found in one specific corner of a conference room. Which of the following is the MOST likely cause? 

A. Incorrect encryption method 

B. Incorrect antenna type 

C. Incorrect channel 

D. Incorrect SSID identifier 

Answer: B 


Q179. Which of the following has a maximum data rate of 11Mbps? 

A. 802.11n 

B. 802.11g 

C. 802.11b 

D. 802.11a 

Answer: C 


Q180. Kurt, the network administrator, has just finished installing a new 10/100/1000 switch, but receives reports from the server administrator that servers connected to the new switch seem to be experiencing slow LAN connections. Kurt checks the port connecting the new switch to the core switch and sees the following information: 

#show run interface GigabitEthernet 0/10 

Switchport trunk encapsulation dotlq 

Switchport mode trunk 

Switchport trunk native VLAN 10 

Which of the following is the MOST likely cause of the slow connections? 

A. The servers have not had VLAN tagging enabled on their NICs 

B. Speed and duplex have not been set 

C. VLAN tagging was not set on the trunk 

D. The servers have been connected with CAT5 cable 

Answer: B