Google IT Support Professional:The Bits and Bytes of Computer Networking (Week 6) Troubleshooting and the Future of Networking.

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★Troubleshooting and the Future of Networking★ 

Q1.The ability for a protocol or program to determine that something went wrong is known as ________.

1. redundancy
2. data verification
3. error detection
4. data resilience

Error detection is determining that an error occurred; error recovery is attempting to fix this error automatically.

Q2.The Linux and macOS program traceroute is known by a slightly different name on Windows. It's referred to as ______.

1. tracepath
2. ping
3. ipconfig
4. tracert

These programs operate slightly differently and have slightly different names.

Q3.The IPv6 loopback address is _____.

1. 127.0.0.1
2. 0000:0000:0000:0000:0000:0000:0000:0000
3. 0000:0000:0000:0000:0000:0000:0000:0001

The IPv6 loopback address is a great example of how IPv6 address compaction works.

Q4.PaaS stands for ______.

1. Platform as a Service
2. Packets as a Service
3. Preamble as a Service
4. Platform as a Schedule

PaaS enables you to run applications without requiring an entire server to do so.

Q5.For all IPv6 addresses, the network ID is always the first ______ bits.

1. 16
2. 32
3. 64
4. 128

For all IPv6 addresses, the first 64 bits are the network ID and the last 64 bits are the host ID.

Q6.You need to find the Internet Protocol (IP) address for a website. Which command do you use on a Windows system?

1. netcat
2. nslookup
3. ping
4. pathping

Using the nslookup command with a domain will return a host (A) record.

Q7.As an IT decision maker, you plan to satisfy business needs by using software as a service. Which option do you deploy?

1. Virtual firewall
2. Windows Server 2019
3. Office 365
4. Linux workstation

Software as a Service (SaaS) is a model that uses cloud-based software, rather than locally installed software.

Q8.When using the netcat command to test a network port, which option will provide output that is not useful for scripting, but is useful for the human eye?

1. -z
2. -v
3. -Port
4. No option is required

The “-v” flag, which stands for verbose, is useful as it formats the command’s output to be readable to human eyes.

Q9.When registering a new domain name, either the registrar's servers or self-owned servers can be used as name servers. What function will the name servers provide for the domain?

1. Authoritative
2. Domain transfer
3. Address reservation
4. Error recovery

An authoritative name server is responsible for a Domain Name System (DNS) zone.

Q10.Which addresses represent valid local loopback addresses? Check all that apply.

1. ::0
2. ::1
3. 255.255.255.255
4. 127.0.0.1

Q11.You run the Test-NetConnection command on a Windows PC while only providing a host name. As a result, what default action does the command use?

1. Private tunnel
2. Network address translation
3. Echo request
4. Name server lookup

When running the Test-NetConnection command on a Windows PC and only providing a host name, an Internet Control Message Protocol (ICMP) echo request (ping) is used.

Q12.For Internet Protocol (IP) v6 traffic to travel on an IP v4 network, which two technologies are used? Check all that apply.

1. Datagrams
2. IPv6 tunnels
3. IPv4 Tunnels
4. Packets

Q16.When shortening an Internet Protocol (IP) v6 address, which two rules are used? Check all that apply.

1. Removing all leading zeros.
2. Removing all leading ones.
3. Replace groups of ones with semicolons.
4. Replace groups of zeros with colons.

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