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Google IT Support practice questions

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Question 1Troubleshooting and customer care

What is the main purpose of a help desk ticketing system?

  1. Recording each request, its history, and its resolution Correct answer.
  2. Automatically repairing software defects on user machines
  3. Storing user passwords so agents can log in as the user
  4. Replacing the need for human support staff entirely

Explanation

A ticketing system creates a persistent record of every request so it can be tracked, prioritized, handed off, and reviewed later. It also produces the audit trail and metrics that support teams use to improve service. It is a record-keeping and workflow tool, not a repair or authentication tool.

Question 2Troubleshooting and customer care

Which behavior best demonstrates active listening during a support call?

  1. Summarizing the issue back to the user after they finish Correct answer.
  2. Guessing the cause before the user describes the symptom
  3. Reading the next ticket while the user is still talking
  4. Typing loudly so the user knows you are busy

Explanation

Active listening means giving the speaker full attention and then confirming understanding by restating what you heard. This catches misunderstandings early and signals respect to the user. Multitasking or rushing to a diagnosis undermines both accuracy and rapport.

Question 3Troubleshooting and customer care

A user says, 'This is the third time I have called about this.' Which reply is most appropriate?

  1. I understand the frustration; let me review the earlier tickets with you. Correct answer.
  2. Please hold the line while I look for a colleague who can help you.
  3. That is not my fault; I only started my shift an hour ago.
  4. You must have done something wrong when you called the first two times.

Explanation

Acknowledging the user's frustration and then taking a concrete action shows empathy without accepting blame or arguing. Reviewing the earlier tickets demonstrates ownership of the problem. Deflecting or blaming the user escalates the situation instead of resolving it.

Question 4Troubleshooting and customer care

In a service level agreement, what does the response time define?

  1. The charge applied to out-of-hours support calls
  2. The maximum time before a reported issue gets a first reply Correct answer.
  3. The number of tickets an agent must close each day
  4. The maximum time a user may keep a loan laptop

Explanation

Response time is the clock that starts when a request is submitted and stops when an agent first acknowledges or replies to it. It is distinct from resolution time, which measures how long the fix takes. SLAs state both so users know what to expect at each stage.

Question 5Troubleshooting and customer care

Which explanation of a fix is most appropriate for a non-technical user?

  1. I applied a registry hive patch to correct the conflicting group policy object.
  2. I purged the cache and flushed the DNS resolver, so the cache poisoning should be gone.
  3. The kernel-level socket buffer was exhausted, so I reinitialized the network stack.
  4. I cleared the temporary files your browser had stored, which should stop the page freezing. Correct answer.

Explanation

Plain language describes what was done and what the user will notice, using everyday words instead of internal terminology. Users need enough understanding to recognize the fix and to report a recurrence accurately. Technical shorthand should be saved for ticket notes read by other technicians.

Question 6Troubleshooting and customer care

Which information is most important to record in a ticket before closing it?

  1. The user's home address and personal phone number
  2. The agent's personal opinion of the user's technical skill
  3. The exact duration of every call handled that day
  4. The symptoms reported, the steps taken, and the resolution applied Correct answer.

Explanation

Ticket notes exist so that anyone picking up the issue later can understand what was seen, what was tried, and what finally worked. Recording the verified resolution also turns the ticket into a reusable reference. Personal data that is not needed for the fix should be left out entirely.

Question 7Troubleshooting and customer care

What is the first step of the standard troubleshooting methodology?

  1. Identifying the problem by gathering information from the user Correct answer.
  2. Documenting the findings and closing the resolved ticket
  3. Establishing a plan of action and implementing the solution
  4. Verifying full system functionality and preventive measures

Explanation

Troubleshooting begins with identifying and clearly stating the problem, which means questioning the user and inspecting the system for symptoms and recent changes. Without an accurate problem statement, every later step targets the wrong thing. Planning, implementing, and verifying all follow once the problem is defined.

Question 8Troubleshooting and customer care

Which of these reported issues would normally be given the highest priority?

  1. A request for an extra monitor for a new starter next month
  2. An outage that stops the sales team from taking orders Correct answer.
  3. A user whose mouse pointer moves slightly slowly
  4. A user asking how to change their desktop wallpaper

Explanation

Priority reflects business impact and urgency, so an outage blocking revenue-generating work outranks cosmetic or convenience requests. The number of affected users, the criticality of the function, and the availability of a workaround all raise priority. Cosmetic preferences and future-dated requests are queued behind operational failures.

Question 9Troubleshooting and customer care

While working a ticket you find the fault lies in a business-critical server that you are not authorized to change. What should you do?

  1. Attempt the change yourself and inform the owner afterwards
  2. Close the ticket and ask the user to call back later
  3. Wait until the server fails completely before involving anyone
  4. Escalate to the team that owns the server, passing on your findings Correct answer.

Explanation

Escalation is the correct action when the fix requires access or authority you do not have, and the handoff should carry the diagnostic work already done. That preserves the user's progress and prevents the next team from starting over. Unauthorized changes on critical systems risk outages and break change-control records.

Question 10Troubleshooting and customer care

Which of these questions is open-ended?

  1. Can you describe what happens when you try to print? Correct answer.
  2. Is the printer cable plugged into the port on the wall?
  3. Did you restart the computer before you called the help desk?
  4. Is the printer powered on and connected to the network?

Explanation

Open-ended questions invite a description rather than a yes or no, so they surface symptoms the technician would not have thought to ask about. They are most useful early, when the problem is still being identified. Closed questions are better later, to confirm specific details.

Question 11Troubleshooting and customer care

An upset user keeps interrupting you while you try to explain the fix. What is the best approach?

  1. Transfer the call to a colleague without giving any explanation
  2. Speak over them so your explanation is finished quickly
  3. Let them finish, acknowledge the frustration, then ask for details Correct answer.
  4. Place them on hold until they have calmed down

Explanation

De-escalation starts with letting the person be heard and naming their frustration, which lowers the emotional temperature. Only then can the conversation move to the concrete details needed to solve the problem. Talking over someone or cutting them off usually increases hostility.

Question 12Troubleshooting and customer care

You have applied a fix and the user says the problem seems gone. What should you do before closing the ticket?

  1. Confirm the original task now works and that nothing else was broken Correct answer.
  2. Close it straight away to keep the ticket queue short
  3. Reimage the machine as a precaution before closing
  4. Ask the user to sign a waiver in case the fault returns

Explanation

Verification means checking that the original task succeeds end to end and that the change did not introduce new faults. A user's quick confirmation is a good sign but is not proof, so the technician confirms the specific function. Closing without verification often produces a repeat ticket.

Question 13Troubleshooting and customer care

A user's laptop will not join the office Wi-Fi, but phones and other laptops in the same room connect without trouble. Where should you focus troubleshooting?

  1. The Wi-Fi access point that serves the whole floor
  2. The building's internet connection and its provider
  3. The external websites the user is trying to reach
  4. The laptop's own wireless adapter and saved network settings Correct answer.

Explanation

Working devices on the same network show that the shared infrastructure is healthy, so the fault is isolated to the single laptop. Focusing on the adapter, saved profiles, and credentials avoids wasted effort on components already proven to work. Comparing working and failing cases is the fastest way to narrow the scope.

Question 14Troubleshooting and customer care

A remote user describes an error message that you cannot reproduce on your own machine. What is the most efficient next step?

  1. Reinstall the operating system over the phone
  2. Ask the user to mail the laptop to the office
  3. Start a remote session so you can see the error yourself Correct answer.
  4. Ask the user to describe the error again more slowly

Explanation

Remote support tools let the technician observe the exact error text, timing, and context instead of relying on a verbal description. Seeing the failure directly shortens diagnosis and reduces miscommunication. Consent and privacy rules should be respected before taking control of a user's screen.

Question 15Troubleshooting and customer care

A replacement part will take three business days to arrive. How should you handle the user's expectations?

  1. Promise it will arrive tomorrow so they feel better
  2. Say nothing and contact them when the part arrives
  3. Ask them to call the help desk every day to check
  4. Give the expected timeline and agree when you will next update them Correct answer.

Explanation

Setting an honest timeline and agreeing on a scheduled update keeps the user informed and reduces repeat calls. It also gives the technician a commitment to meet, which builds trust. False promises and silence both damage credibility when the real timing becomes clear.

Question 16Troubleshooting and customer care

Why is it useful to ask a user to perform the failing action while you watch or while connected remotely?

  1. It shortens the call by avoiding any note taking
  2. It removes the need to check system logs afterwards
  3. It proves to the user that the fault is their own mistake
  4. It lets you capture the exact error, timing, and triggering steps Correct answer.

Explanation

Reproducing the problem turns a second-hand description into direct evidence of the error text and the sequence that causes it. That evidence anchors the probable-cause theory and speeds testing. Documentation is still required, and logs may still add useful history.

Question 17Troubleshooting and customer care

Four separate users report the same printer error within one week. Besides fixing each ticket, what is the most valuable action?

  1. Add each user to a mailing list for printer news
  2. Change the printer's queue name to something shorter
  3. Delete the older tickets so the queue looks cleaner
  4. Write a knowledge base article with the cause and the verified fix Correct answer.

Explanation

Repeated incidents are a signal that the fix should be captured so the next technician resolves the same issue faster. A knowledge base article turns individual effort into organizational knowledge and supports consistent answers. Deleting history or renaming objects does nothing to prevent recurrence.

Question 18Troubleshooting and customer care

A user says, 'The internet is down.' Which response best narrows the problem?

  1. Ask what they were doing and what they saw on screen Correct answer.
  2. Tell them the internet is working and end the call
  3. Restart the internet service provider's routers
  4. Assume the browser is out of date and update it

Explanation

Vague reports usually describe a specific failure the user cannot name, so clarifying the task and the observed symptom turns it into a testable problem. This step prevents wasted effort on unrelated systems. Acting on assumptions risks changing things that were never broken.

Question 19Troubleshooting and customer care

You are about to install a new graphics driver on a user's workstation. What precaution should you take first?

  1. Delete the old driver files permanently first
  2. Disable the antivirus so the installer runs faster
  3. Confirm a backup or restore point exists before you begin Correct answer.
  4. Ask the user to log in as administrator and leave

Explanation

Any change to a working machine should be reversible, so a known restore point or backup is established before the change is made. If the new driver causes instability, the system can be rolled back quickly. Weakening security or deleting the previous driver removes the safety net.

Question 20Troubleshooting and customer care

A fix has held for a day. Why is it good practice to contact the user again after closing the ticket?

  1. To offer the user additional hardware for purchase
  2. To reopen the ticket so it counts as new work
  3. To ask the user for a personal rating of your work
  4. To confirm the problem has not returned and the user can work Correct answer.

Explanation

A follow-up confirms that the repair lasted beyond the moment of testing and that the user's normal work is unaffected. It also catches intermittent faults that only reappear under everyday use. The contact should be brief and focused on the user's outcome, not on sales or personal praise.

Question 21Troubleshooting and customer care

A printer jams every few days; each time the jam is cleared and the ticket closed. Which action best prevents the recurring failure?

  1. Find the underlying cause, such as worn rollers, and arrange a repair Correct answer.
  2. Tell the user to avoid printing long documents in future
  3. Give the printer queue a shorter, simpler name
  4. Close each ticket faster so the user is not inconvenienced

Explanation

Repeated identical failures indicate that the symptom is being treated while the cause remains. Root cause analysis looks for the component or condition that produces the jam, such as worn feed rollers or unsuitable paper, and addresses it permanently. Quick clears only reset the clock until the next occurrence.

Question 22Troubleshooting and customer care

A caller asks you to send their account password and login details to a personal webmail address. What is the best response?

  1. Send it, because the caller already passed identity verification
  2. Send only the username and keep the password for a later call
  3. Decline and direct them to the approved secure password reset process Correct answer.
  4. Write the password into the ticket for the user to read

Explanation

Credentials are never sent to personal addresses because email is not a secure channel and the request may come from an impersonator. The correct path is the organization's verified reset process, which proves identity and lets the user set a secret only they know. Storing or transmitting passwords in tickets is prohibited for the same reason.

Question 23Troubleshooting and customer care

You must install a critical security patch on a production server that many staff rely on. Which approach follows accepted practice?

  1. Install it at once without telling anyone to shorten the exposure
  2. Get the change approved, schedule a window, and plan a rollback Correct answer.
  3. Ask the person who reported the vulnerability to install it
  4. Install it on a Friday afternoon so problems surface at the weekend

Explanation

Change management balances urgency against the risk of disruption by approving, scheduling, communicating, and preparing a way back. Notifying affected staff and choosing a maintenance window limits the blast radius of an unexpected failure. Unannounced or badly timed changes on production systems turn a security fix into an outage.

Question 24Troubleshooting and customer care

Two users sitting next to each other report identical network failures, while staff in other parts of the building work normally. What is the most likely explanation?

  1. The company firewall has blocked all outbound traffic
  2. A shared local part, such as the floor switch or cabling, is faulty Correct answer.
  3. The internet service provider has a regional outage
  4. Both users have forgotten their passwords at once

Explanation

The failure follows a physical boundary: adjacent users fail while others succeed, which points to a shared component serving that small area. Regional provider problems or firewall-wide blocks would affect the whole site, not one pair of desks. Locating the common element shared by failing cases is the key analytical step.

Question 25Troubleshooting and customer care

A user's problem matches a known issue with a documented workaround, but the user demands a full rebuild of the machine. What is the best course of action?

  1. Close the ticket as resolved without applying anything
  2. Explain the workaround, apply it, and monitor for a return of the problem Correct answer.
  3. Refuse to help until the user accepts the workaround
  4. Rebuild the machine at once because the user asked for it

Explanation

The documented workaround resolves the user's immediate need faster and with far less disruption than a rebuild. Explaining the reasoning respects the user, while monitoring preserves the option to escalate for a permanent fix if the fault recurs. Requests for drastic action are balanced against risk and the standard knowledge base.

Question 26Troubleshooting and customer care

While explaining a completed repair to a non-technical user, which approach is most effective?

  1. Keep the explanation very short by saying only that the issue has been handled.
  2. Use the exact vendor terminology so that the explanation is technically precise.
  3. Provide the full technical detail in writing so the user can review it carefully later.
  4. Explain the cause in plain language and confirm the user understands. Correct answer.

Explanation

Explanations should match the audience: plain language plus a check for understanding ensures the user knows what happened and what to do if it recurs. Precision matters, but it must not come at the cost of comprehension.

Question 27Troubleshooting and customer care

Which action best demonstrates active listening during a support call?

  1. Staying silent until the user stops talking, then immediately stating the fix.
  2. Finishing the user's sentences for them so the call moves along faster.
  3. Typing notes into the ticket while the user talks and asking them to repeat details later.
  4. Summarizing the user's description back to them and confirming that it is accurate. Correct answer.

Explanation

Active listening means reflecting what you heard back to the speaker so misunderstandings surface early, before troubleshooting goes down the wrong path. It requires attention and confirmation rather than speed.

Question 28Troubleshooting and customer care

After resolving an issue that had no existing documentation, why is it valuable to write a knowledge base article?

  1. It guarantees that no other user will ever report the same issue again in future.
  2. Other technicians can resolve the same issue without repeating the investigation. Correct answer.
  3. It transfers ownership of the open ticket to another support team when the shift ends.
  4. It replaces the need to record the resolution steps in the original ticket's history.

Explanation

A knowledge base captures a reusable resolution so the next occurrence is handled quickly and consistently by anyone on the team. It supplements, rather than replaces, the individual ticket record.

Question 29Troubleshooting and customer care

You suspect, but have not confirmed, that a recent software update caused a user's problem. How should you describe this to the user?

  1. Avoid mentioning the update at all until you have a complete and confirmed answer to give them.
  2. Reassure the user that the problem is random and has nothing to do with anything they changed recently.
  3. Tell the user that the recent update definitely caused the problem so that they treat the report seriously.
  4. Explain that the update is a possible cause you are still checking and say what happens next. Correct answer.

Explanation

Communicate the difference between a confirmed fact and a working hypothesis, and pair it with the next action so the user knows what to expect. This keeps the user informed without committing to an unverified claim.

Question 30Troubleshooting and customer care

While fixing a user's printing issue you notice the operating system has not been updated in over a year. The ticket concerns printing only. What is the best course of action?

  1. Say nothing about it, because anything outside the ticket's stated scope should be left alone.
  2. Mention what you noticed, offer to address it now or later, and note it in the record. Correct answer.
  3. Close the printing ticket and reopen it as an operating system update ticket so the work is tracked properly.
  4. Install the updates immediately without discussing it, since keeping systems patched clearly benefits the user.

Explanation

Noticing an unrelated risk is good service, but changing a user's system without agreement can disrupt their work. Report it, offer options, and document so the decision is traceable.

Question 31Troubleshooting and customer care

You find that a user installed unapproved software that caused their machine to crash. What is the most professional response?

  1. Refuse to help until the user acknowledges that the crash was their own fault.
  2. Remind the user at length that policy violations are the root of problems such as this one.
  3. Fix the issue, explain the policy neutrally, and document what happened. Correct answer.
  4. Report the user to their manager before doing any troubleshooting of the crash.

Explanation

Resolve the technical problem first and address the policy point factually, without blame, so the user stays cooperative and informed. Documenting keeps the record accurate for future reference.

Question 32Troubleshooting and customer care

You need a remote session to fix a user's machine, and the user seems uneasy about granting access. What should you do?

  1. Start the session and begin working immediately so the fix is completed quickly.
  2. Explain what you will look at, get consent, and limit the session to what the fix requires. Correct answer.
  3. Ask the user to email their account password so you can work on the machine later that day.
  4. Tell the user that remote access is mandatory for support and there is no alternative option.

Explanation

Remote access exposes a user's screen and data, so it requires informed consent and should be scoped to the task. Transparency about what you will view addresses the user's concern and protects privacy.

Question 33Troubleshooting and customer care

While working a ticket you realize a step you performed earlier may have deleted some of the user's files. What is the most appropriate action?

  1. Restore what you can and avoid mentioning the deletion, since the user may never notice it.
  2. Close the ticket immediately so that the record does not show that the mistake happened.
  3. Wait to see whether the user reports missing files before deciding whether to say anything.
  4. Tell the user and your supervisor promptly, document it, and try to recover the data. Correct answer.

Explanation

Prompt, honest disclosure limits the damage and gives recovery the best chance, while documentation keeps the record truthful. Concealment compounds the original error.

Question 34Troubleshooting and customer care

A workstation reboots randomly. You replace the power supply and the reboots stop for a week, then return. What is the best interpretation and next step?

  1. The problem was resolved because it stayed away for a week, so close the ticket as fixed.
  2. The cause is still present, so return to diagnosis and gather more evidence from logs. Correct answer.
  3. The replacement part must have been faulty, so order the same part again from a different supplier.
  4. The user is probably causing the reboots, so ask them to change how they use the machine.

Explanation

A fix that holds only briefly usually means the original fault was never identified, and the replacement addressed a symptom at most. Returning to systematic diagnosis with logs and measurements is the sound next step.

Question 35Networking

At which OSI model layer does a router primarily operate when forwarding packets between networks?

  1. Network Correct answer.
  2. Transport
  3. Data link
  4. Physical

Explanation

Routers choose paths using logical IP addresses, and IP addressing is defined at the network layer (layer 3). Lower layers deal with local framing and signaling, while upper layers deal with end-to-end delivery and applications.

Question 36Networking

Which TCP port does HTTPS use by default?

  1. 21
  2. 80
  3. 25
  4. 443 Correct answer.

Explanation

HTTPS runs HTTP inside a TLS session and listens on TCP port 443 by default. Plain HTTP uses 80, FTP control uses 21, and SMTP uses 25.

Question 37Networking

Which of the following IPv4 addresses belongs to a private (RFC 1918) range?

  1. 8.8.8.8
  2. 172.32.0.5
  3. 192.168.1.10 Correct answer.
  4. 11.0.0.1

Explanation

The private IPv4 ranges are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. Only 192.168.1.10 falls inside one of those blocks, so it is not routed on the public internet.

Question 38Networking

Which connector is used on standard twisted-pair Ethernet network cables?

  1. BNC
  2. LC
  3. RJ11
  4. RJ45 Correct answer.

Explanation

Twisted-pair Ethernet cabling terminates in an RJ45 (8P8C) plug, which carries four wire pairs. LC connectors are for fiber, BNC is for coaxial cable, and RJ11 is the smaller telephone connector.

Question 39Networking

What is the primary function of DNS on a network?

  1. Dynamically assigning IP addresses to hosts
  2. Translating host names into IP addresses Correct answer.
  3. Encrypting traffic between browsers and servers
  4. Selecting the best path for packets between routers

Explanation

DNS is a distributed database that resolves human-friendly names such as www.example.com into the IP addresses clients need in order to connect. It does not assign addresses or move packets.

Question 40Networking

Which service automatically supplies a client with an IP address, subnet mask, default gateway, and DNS servers when it joins a network?

  1. ARP
  2. DHCP Correct answer.
  3. NAT
  4. DNS

Explanation

DHCP uses a lease process to hand out a complete IP configuration so administrators do not have to configure each host manually. In a typical exchange the client discovers a server, is offered an address, requests it, and receives acknowledgement.

Question 41Networking

How long is a MAC address?

  1. 32 bits
  2. 64 bits
  3. 128 bits
  4. 48 bits Correct answer.

Explanation

A MAC address is 48 bits long and is usually written as 12 hexadecimal digits, for example 00:1A:2B:3C:4D:5E. The first 24 bits identify the manufacturer and the last 24 bits identify the individual interface.

Question 42Networking

Which command sends ICMP echo requests to test whether a remote host is reachable?

  1. traceroute
  2. netstat
  3. ping Correct answer.
  4. nslookup

Explanation

Ping sends ICMP echo request packets and waits for echo replies, which confirms basic IP reachability and shows round-trip time. The other tools report path hops, DNS records, or active connections.

Question 43Networking

A subnet uses the mask 255.255.255.192. How many usable host addresses does it provide?

  1. 62 Correct answer.
  2. 30
  3. 64
  4. 126

Explanation

The mask 255.255.255.192 is a /26, which leaves 6 host bits. That gives 2^6 = 64 total addresses, and subtracting the network and broadcast addresses leaves 62 usable host addresses.

Question 44Networking

Which OSI layer adds source and destination port numbers to the data being sent?

  1. Network
  2. Application
  3. Transport Correct answer.
  4. Data link

Explanation

The transport layer, implemented by TCP and UDP, adds port numbers so the receiving host can deliver data to the correct process. The network layer adds IP addresses and the data link layer adds MAC addresses.

Question 45Networking

A host must send a frame to another device on the same Ethernet LAN but knows only that device's IP address. Which protocol does it use to learn the destination MAC address?

  1. ARP Correct answer.
  2. DNS
  3. DHCP
  4. ICMP

Explanation

ARP broadcasts a request asking which device owns the target IP address, and the owner replies with its MAC address so the frame can be built. This only works inside the local broadcast domain; traffic to other subnets is sent to the default gateway instead.

Question 46Networking

What is the main purpose of NAT on a home router?

  1. Translating private addresses to a public address Correct answer.
  2. Assigning IPv4 addresses to clients automatically
  3. Filtering inbound traffic by port number
  4. Resolving host names into IP addresses

Explanation

NAT rewrites the private source addresses of outbound packets to the router's public address and tracks the translations so replies can be sent back to the right internal host. This lets many internal hosts share a single public IPv4 address.

Question 47Networking

A workstation can reach other hosts on its own subnet but cannot reach hosts on the internet. Which configuration is most likely missing or incorrect?

  1. The MAC address
  2. The subnet mask
  3. The default gateway Correct answer.
  4. The DNS server

Explanation

Traffic for addresses outside the local subnet must be sent to the default gateway, so a missing or wrong gateway breaks off-subnet connectivity while local traffic still works. A DNS problem would leave IP-based connections working and only break name lookups.

Question 48Networking

What advantage does a switch provide over a hub on an Ethernet LAN?

  1. It forwards frames only out of the destination port Correct answer.
  2. It assigns IP addresses to connected devices
  3. It encrypts all traffic between connected hosts
  4. It converts private addresses into public addresses

Explanation

A switch learns which MAC address is reachable on each port and forwards each frame only toward the destination, which reduces collisions and unnecessary traffic. A hub repeats every incoming frame out of every other port.

Question 49Networking

Compared with the 2.4 GHz band, what is a typical characteristic of the 5 GHz Wi-Fi band?

  1. Longer range through walls
  2. Compatibility with more legacy devices
  3. Higher throughput over a shorter range Correct answer.
  4. Greater interference from microwave ovens

Explanation

Higher radio frequencies carry more data but are absorbed more readily by walls and other obstacles, so 5 GHz typically delivers faster links at shorter distances. The 2.4 GHz band travels farther and is more crowded with interfering devices.

Question 50Networking

How many bits make up an IPv6 address?

  1. 64
  2. 32
  3. 48
  4. 128 Correct answer.

Explanation

IPv6 uses 128-bit addresses, usually written as eight groups of four hexadecimal digits separated by colons. The much larger address space removes the need for the address conservation techniques common in IPv4.