Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A user reports that their desktop computer loses network connectivity intermittently. The technician finds that the RJ45 connector on the cable has a broken retention clip, but replacing the cable does not resolve the issue. The computer is connected to a wall jack in the office. The technician uses a cable tester on the wall jack and discovers that pins 4 and 5 are open (no continuity). Which of the following is the MOST likely cause of the intermittent connectivity?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Faulty network interface card (NIC) in the computer
A faulty NIC would cause persistent connectivity problems, not intermittent issues, and would not result in an open pair detected by a tester at the wall jack. The tester measures the wiring, not the NIC.
B
Distractor review
Damaged patch cable at the patch panel in the server room
A damaged patch cable could cause intermittent issues, but the tester is connected directly to the wall jack; an open pair at that point indicates the fault is in the wall jack or the cabling run from the jack to the patch panel, not in the patch cable itself.
C
Best answer
Incorrect wiring standard on the wall jack
An open pair (pins 4 and 5) suggests that the conductors for that pair are not properly terminated at the wall jack. This is a common wiring error, such as failing to push a wire fully into the IDC terminal or using the wrong color code. Re-terminating the jack should restore connectivity.
D
Distractor review
Malfunctioning switch port
While a malfunctioning switch port could cause intermittent connectivity, the cable tester indicates an open pair at the wall jack, which is a wiring fault. The switch port cannot cause a pair to appear open on a tester; the tester is measuring the cable, not the switch.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A user reports intermittent network connectivity on a desktop computer. The technician observes that the Ethernet link light on the NIC turns off for a few seconds and then turns back on. The cable passes a wiremap test, the switch port is verified good with another device, and the NIC driver is updated. The issue occurs more frequently when the computer's case fan runs at high speed. Which of the following is the MOST likely cause?
Question 2
A workstation is unable to connect to the internet. The technician runs the 'ipconfig' command and sees the IPv4 address is 169.254.15.200 with a subnet mask of 255.255.0.0. The workstation can ping other devices on the local subnet but cannot ping the default gateway or any external addresses. Which TWO actions should the technician take to resolve this issue? (Select two.)
Question 3
A workstation is connected to a managed switch. It obtains a valid IP address (192.168.10.50) from the DHCP server, but it cannot ping the default gateway (192.168.10.1). The link light on both the workstation NIC and the switch port are solid green. Other workstations on the same switch CAN ping the default gateway successfully. The technician accesses the switch management interface and finds that the workstation's port is configured as an access port on VLAN 10. The default gateway is located on VLAN 20. An inter-VLAN router is configured but not explicitly allowing VLAN 10 access to VLAN 20. Which of the following is the MOST likely cause of the problem?
Question 4
A company develops a web application that relies on a custom library available only for a specific Linux distribution. They want to deploy the application in the cloud with minimal administrative overhead, but they need full control over the software stack, including the ability to install the custom library and configure the web server. Which cloud service model BEST meets these requirements?
Question 5
A company has a legacy virtual machine running on a deprecated hypervisor (Hyper-V). They want to migrate this VM to a new hypervisor (VMware vSphere) hosted in a private cloud while preserving the VM's configuration, installed applications, and data. The migration must be performed with minimal downtime. Which of the following methods is MOST appropriate?
Question 6
A company hosts a critical database on a virtual machine in a public cloud. The database requires persistent storage that must be retained even if the VM is terminated. The storage must also be accessible from multiple VMs simultaneously for a future high-availability configuration. Which type of cloud storage BEST meets these requirements?
FAQ
Questions learners often ask
What does this 220-1101 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Incorrect wiring standard on the wall jack — Pins 4 and 5 correspond to one of the twisted pairs in Ethernet cabling (typically the blue pair). An open circuit on these pins indicates a break in the wire or a poor termination at the wall jack or patch panel. Since the cable and connector were replaced, the fault is in the wall jack or its wiring. Incorrect wiring standard (e.g., T568A vs T568B mismatched, or a pin not punched down properly) would cause a pair to be open. The network interface card (NIC), patch cable in the server room, or switch port could also cause issues, but the tester specifically identifies the wall jack as the problem location.
What should I do if I get this 220-1101 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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