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2021 Jan what is jk0-019:
Q181. Which of the following tools can be used to identify the location of a network outage?
A. traceroute
B. netstat
C. nslookup
D. ping
Answer: A
Q182. For which of the following reasons could a single server’s NIC transmit packets from multiple MAC address sources?
A. The server contains several virtual machines and the MAC addresses are from the virtual machines.
B. The server is hosting a web server and the MAC addresses are from connected browsers.
C. The server is hosting a proxy server and the MAC addresses are from the connected clients.
D. The server NIC is starting to fail and should be replaced.
Answer: A
Q183. 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: D
Q184. Which of the following is a Class A private IP address?
A. 4.2.2.2
B. 10.1.1.45
C. 169.254.9.15
D. 192.168.0 100
Answer: B
Q185. A technician is troubleshooting a network connectivity issue with a user's desktop configured to use a static IP address. The technician notes the following configuration:
IP 172.16.2.0
NETMASK 255.255.254.0
DEFAULT GATEWAY 172.16.1.1
DNS 192.168.1.1
Which of the following changes will allow the desktop to communicate properly with remote networks?
A. Changing the DNS to 172.16.1.100
B. Changing the WINS server to 172.174.136
C. Changing the netmask to 255.255.255.0
D. Changing the default gateway to 1 72.16.3.1
Answer: D
Regenerate difference between n10-005 and jk0-019:
Q186. Which of the following is an invalid MAC address?
A. AA:CE:58:FD:90:08
B. 44:98:3E:F8:33:23
C. 56:AD:BX89:55:54
D. 94:9E:FE:EE:8C:DF
Answer: C
Q187. Joe, a customer, is looking to implement wireless security. Which of the following provides the WEAKEST encryption?
A. SSH
B. WEP
C. TLS
D. EAP
Answer: B
Q188. 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
Q189. 1000BaseT has a MAXIMUM run distance of:
A. 25 meters (82 feet)
B. 100 meters (328 feet)
C. 500 meters (1640 feet)
D. 1000 meters (3280 feet)
Answer: B
Q190. 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