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2021 Dec JK0-019 exam prep
Q241. Which of the following issues is a common problem in wireless infrastructures?
A. Incorrect port number
B. Mismatched SSIDs
C. Invalid telnet sessions
D. Too many collisions
Answer: B
Q242. A technician needs to add network capacity. However, when plugging a second switch into the first switch, there is no link light. Which of the following is the cause of this situation?
A. The switches are not stackable.
B. The cable was not wired using 568A.
C. The cable needs to be a crossover cable
D. The switches have IGMP snooping enabled
Answer: C
Q243. Which of the following improves wireless performance by allowing only one wireless transmission on the network at a time?
A. CSMA/CA
B. CSMA/CD
C. Wireless encryption
D. Wireless bonding
Answer: A
Q244. Which of the following services do TCP connections provide to application layer protocols? (Select TWO).
A. Transport services without error recovery
B. Large data size manageability using segmentation
C. Secure Kerberos password encryption on data
D. Delivery through error recovery
E. Proxy server authentication
Answer: BD
Q245. Sandy, a network technician, is attempting to map a FQDN to an internal server at the address of 10.0.0.15 without NAT/PAT. Which of the following is the reason this will ultimately not work?
A. This is a private address which cannot be seen by external users.
B. The address does not have the appropriate subnet mask assigned.
C. This is a public address which can only be seen by internal users.
D. This is a private address which can only be seen by external users.
Answer: A
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Q246. Which of the following should Karen, a technician, update when new computers are purchased?
A. Asset management
B. Change management
C. Cable management
D. Baselines
Answer: A
Q247. After a brownout, a user can connect to the internal network, but not the Internet. Which of the following is the company's DSL router experiencing that is causing this issue?
A. Switching loop
B. Power failure
C. Broadcast storm
D. Duplicate IP address
Answer: B
Q248. Which of the following authentication solutions also provides AAA and uses TCP?
A. TACACS+
B. Kerberos
C. RADIUS
D. RAS
Answer: A
Q249. Karen, a network administrator, has discovered attempts to penetrate the network and access the customer database. Which of the following methods could she use to provide a false customer database to the attacker?
A. Radius
B. DMZ
C. Honeypot
D. Kerberos
Answer: C
Q250. Which of the following allows a WAP to be installed in a location where there are no power outlets available?
A. Port authentication
B. PoE
C. PPTP
D. Trunking
Answer: B