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2021 Nov JK0-019 exam guide

Q321. A small business with eight employees has just opened their office in a renovated loft in a busy downtown area. The owner of the building does not want to run any additional wiring beyond power, to preserve the historic nature of the building. Because of this stipulation, almost all tenants in the building have chosen to implement wireless. Which of the following should be the FIRST step in setting up this SOHO network? 

A. Run a wireless site survey 

B. Speak to tenants to determine their telephone standards. 

C. Install and configure a Gigabit switch. 

D. Determine the operating system versions. 

Answer: A 


Q322. A packet sniffer is MOST likely used to do which of the following? 

A. Prevent network based attacks 

B. Capture and analyze network traffic 

C. Route IP packets to remote destinations 

D. Record the switch ARP table 

Answer: B 


Q323. Which of the following services can an administrator use to reduce latency and prioritize the flow of data? 

A. Fault tolerance 

B. RADIUS 

C. Qos 

D. Load balancing 

Answer: C 


Q324. Joe, an end user, has plugged in both ends of the same network cable to two adjacent jacks. Both ports are connected to the same switch in the IDF. Which of the following will MOST likely happen? 

A. VLAN malfunction 

B. Broadcast storm 

C. Quality of Service loss 

D. Duplicate IP addresses 

Answer: B 


Q325. A small amount of spoofed packets are being sent across a network and a large amount of reply packets are being sent back to the network resource. Which of the following BEST describes this security threat? 

A. Worm 

B. Smurf 

C. Logic Bomb 

D. Man-in-the-middle 

Answer: B 


Improve JK0-019 actual exam:

Q326. Which of the following ports are used by default for web servers? (Select TWO). 

A. 80 

B. 110 

C. 123 

D. 143 

E. 443 

Answer: AE 


Q327. Joe, a network administrator, would like to ensure that the footprint of the company’s wireless coverage is limited to the office borders, located on the premises. Which of the following features should he adjust on all of the company’s WAPs to make this change? 

A. SSID masking 

B. PPPOE 

C. Transmission power 

D. Encryption technology 

Answer: C 


Q328. When ordering switches for a new building, which of the following is the BEST way for the technician to determine the number of switches to put in each network closet? 

A. Review the architectural plans to see how many drops go to each closet. 

B. Count the number of rooms near each closet and standardize eight drops per room. 

C. Wireless is the new standard and no network switches will be needed in the building, 

D. Count the number of phone ports and configure two network ports for each phone port. 

Answer: A 


Q329. Karen and Kurt, attackers, use which of the following network scanners to see the protocols that are being used? (Select TWO). 

A. IDS 

B. Packet sniffer 

C. Port scanners 

D. Malware scanner 

E. Ping sweep 

Answer: BC 


Q330. Which of the following could Karen, a network technician, use to inspect connection setup, request, and response headers for users connecting to a web server? 

A. nbtstat command 

B. dig command 

C. ipconfig command 

D. Protocol analyzer 

Answer: D