A network technician needs to ensure outside users are unable to telnet into any of the servers at the datacenter. Which of the following ports should be blocked when checking firewall configuration?
A. 22
B. 23
C. 80
D. 3389
E. 8080
A technician is writing documentation regarding a company's server farm. The technician needs to confirm the server name for all Linux servers. Which of the following commands should the technician run?
A. ipconfig
B. nslookup
C. arp
D. route
A network engineer is investigating reports of poor network performance. Upon reviewing a report, the engineer finds that jitter at the office is greater than 10ms on the only WAN connection available. Which of the following would be MOST affected by this statistic?
A. A VoIP sales call with a customer
B. An in-office video call with a coworker
C. Routing table from the ISP
D. Firewall CPU processing time
Which of the following ports is commonly used by VoIP phones?
A. 20
B. 143
C. 445
D. 5060
Which of the following connector types would have the MOST flexibility?
A. SFP
B. BNC
C. LC
D. RJ45
Which of the following TCP ports is used by the Windows OS for file sharing?
A. 53
B. 389
C. 445
D. 1433
A network administrator redesigned the positioning of the APs to create adjacent areas of wireless coverage. After project validation, some users still report poor connectivity when their devices maintain an association to a distanced AP. Which of the following should the network administrator check FIRST?
A. Validate the roaming settings on the APs and WLAN clients
B. Verify that the AP antenna type is correct for the new layout
C. Check to see if MU-MIMO was properly activated on the APs
D. Deactivate the 2.4GHz band on the APS
A technician is assisting a user who cannot connect to a network resource. The technician first checks for a link light. According to troubleshooting methodology, this is an example of:
A. using a bottom-to-top approach.
B. establishing a plan of action.
C. documenting a finding.
D. questioning the obvious.
Which of the following transceiver types can support up to 40Gbps?
A. SFP+
B. QSFP+
C. QSFP
D. SFP
A network technician is installing new software on a Windows-based server in a different geographical location. Which of the following would be BEST for the technician to use to perform this task?
A. RDP
B. SSH
C. FTP
D. DNS
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