Correct Answer:

255.255.255.224 is correct.

/27 means the first 3 bits of the last octet are being used to address subnets. The binary value 11100000 equals 224 in decimal.

Incorrect Answers:

255.255.255.64, 255.255.255.196, and 255.255.255.27 are incorrect.

The listed decimal values are invalid for a /27 CIDR mask. 

Correct Answer:

SMTP spam messages leaving the network is correct.

SMTP uses TCP port 25; excessive traffic could be indicative of internal e-mail spammers or spamming malware.

Incorrect Answers:

DoS attack against SNMP, cross-site scripting SMTP attack, and SSH administrative traffic on a busy network are incorrect.

SNMP uses UDP port 161.

Cross-site scripting attacks apply to web sites, not SMTP mail.

SSH uses TCP port 22.

Correct Answers:

Full and incremental are correct.

Full and incremental backups clear the archive bit for files when they get backed up.

Incorrect Answers:

Differential and snapshot are incorrect.

Differential backups do not clear the file archive bit.

A snapshot does not modify file attributes; it applies to a disk volume and its changes, or it is a point-in-time copy of a virtual machine’s settings and data.

Correct Answer:

Rollover is correct.

Most users still use a rollover cable for local configuration through a console port.

Incorrect Answers:

Straight-through, crossover, and USB are incorrect.

A straight-through cable is used to connect a computer to network devices such as a router or switch for network access.

A crossover cable is used to connect two devices of the same type.

A USB cable is primarily used to connect peripherals and other devices to host systems.

Correct Answer:

ESD is correct.

Electrostatic discharge (ESD) results from too little humidity in the air. This can damage sensitive electronic components when they are handled.

Incorrect Answers:

Degraded server performance, power surges, and corrosion are incorrect.

Degraded server performance is not the result of low humidity.

Power surges are not the result of low humidity.

Corrosion occurs when there is too much humidity and condensation builds up on components.

Correct Answer:

They provide thermal dissipation is correct.

Heat is dissipated into the chassis away from the CPU.

Incorrect Answers:

They allow CPU overclocking, they allow CPU throttling, and they bind the thermal glue to the chip are incorrect.

CPU overclocking does not require a heat sink.

CPU throttling does not require a heat sink. On the contrary, it could prevent it!

Thermal glue, or paste, is sometimes used to bind the CPU chip to a heat dissipation device or fan on some motherboards.

Correct Answer:

Driver rollback is correct.

Driver rollback reverts to the previous driver.

Incorrect Answers:

System restore point, virtual machine snapshot, and bare-metal restoration are incorrect.

Restoring a system restore point is unnecessary and takes much longer than simply rolling back the problematic driver.

A virtual machine snapshot is unnecessary and takes much longer than simply rolling back the problematic driver.

A bare-metal restoration is unnecessary and takes much longer than simply rolling back the problematic driver.

Correct Answer:

Switches treat each plugged-in device as being on its own network segment is correct.

Each switch port can see only unicast traffic it has sent or is receiving; network broadcasts and multicasts will also be visible. Switch administrators can configure all switch port traffic to be mirrored to the port the sniffing station is plugged into.

Incorrect Answers:

There is no traffic from other stations on the network, packet sniffers work only with IPv6 networks, and routing tables have not been configured to allow the sniffing station to see all network traffic are incorrect.

It is unlikely that there is not even a single packet on the network from another device.

Packet sniffers support many protocols other than IPv6.

Routing table configuration has no impact on what local traffic is visible.

Correct Answer:

Per-core is correct.

Since you have a lot of cores in one server and one socket, paying a per-core license would most likely be more expensive.

Incorrect Answers:

Node-locked, per-server, and per-socket are incorrect.

A node-locked license cost would not change based on the number of sockets or cores you have.

The per-server costs would most likely be lower as you have only one server.

The per-socket costs would most likely be lower as you have only one socket.

Correct Answer:

`diskpart` is correct.

`diskpart` replaces the older `fdisk` and `format` commands.

Incorrect Answers:

`fdisk`, `format`, and `diskconfig` are incorrect.

`fdisk` is replaced in Server 2019 with the `diskpart` command.

`format` is replaced in Server 2019 with the diskpart command.

`diskconfig` is an invalid command.