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A user recently moved a workstation to a different part of the office. The user is able to access the internet and print but is unable to access server resources. Which of the following is the most likely cause of the issue?
- A. Incorrect default gateway
- B. Wrong VLAN assignment
- C. Error-disabled port
- D. Duplicate IP address
A technician is planning an equipment installation into a rack in a data center that practices hot aisle/cold aisle ventilation. Which of the following directions should the equipment exhaust face when installed in the rack?
- A. Sides
- B. Top
- C. Front
- D. Rear
A network administrator needs to add 255 useable IP addresses to the network. A /24 is currently in use. Which of the following prefixes would fulfill this need?
- A. /23
- B. /25
- C. /29
- D. /32
Which of the following allows an organization to map multiple internal devices to a single external-facing IP address?
- A. NAT
- B. BGP
- C. OSPF
- D. FHRP
Which of the following steps in the troubleshooting methodology includes checking logs for recent changes?
- A. Identify the problem.
- B. Document the findings and outcomes.
- C. Test the theory to determine cause.
- D. Establish a plan of action.
Which of the following ports creates a secure connection to a directory service?
- A. 22
- B. 389
- C. 445
- D. 636
Which of the following protocols is used to route traffic on the public internet?
- A. BGP
- B. OSPF
- C. EIGRP
- D. RIP
Which of the following protocols provides remote access utilizing port 22?
- A. SSH
- B. Telnet
- C. TLS
- D. RDP
After changes were made to a firewall, users are no longer able to access a web server. A network administrator wants to ensure that ports 80 and 443 on the web server are still accessible from the user IP space. Which of the following commands is best suited to perform this testing?
- A. dig
- B. ifconfig
- C. ping
- D. nmap
Which of the following attacks would most likely cause duplicate IP addresses in a network?
- A. Rogue DHCP server
- B. DNS poisoning
- C. Social engineering
- D. Denial-of-service