Correct Answer:

One is correct.

42U – 21U (3 rows × 7U) – 4U (2 rows × 2U) leaves 17U remaining, so one row of 10U equipment can be accommodated in the rack.

Incorrect Answers:

None, two, and four are incorrect.

The 17U that remains can accommodate only one row of 10U equipment. 

Correct Answer:

ECC is correct.

Error correcting code (ECC) memory can detect and correct memory errors and is commonly used in servers.

Incorrect Answers:

Non-ECC, DDR6, and DDR7 are incorrect.

Non-ECC is commonly used in desktop computers.

Double data rate 6 (DDR6) is not yet a common memory standard.

DDR7 is not yet a common memory standard.

Correct Answer:

Full is correct.

Full backups take the least amount of time to restore, since the backups could be contained on one set of media.

Incorrect Answers:

Snapshot, incremental, and differential are incorrect.

Snapshots are not considered a sole valid source for backups.

Incremental backups are partial backups needed in addition to full backups for restore; therefore, they take longer to restore than a full backup only.

Differential backups are partial backups needed in addition to full backups for restore; therefore, they take longer to restore than a full backup only.

Correct Answer:

Zoning is correct.

Zoning is configured at the Fibre Channel switch by the storage administrator; it groups servers into groups for network storage access.

Incorrect Answers:

Network ACL, server firewall, and user permissions are incorrect.

Network access control lists (ACLs) are not configured by storage administrators.

Server firewalls are not configured by storage administrators.

User permissions is incorrect. Zoning controls server access, not user access, to network storage.

Correct Answer:

Port scanner is correct.

Port scanners can show listening TCP and UDP ports on remote network hosts. Port numbers are also called “Layer 4 addresses” since they map to OSI Layer 4, the transport layer.

Incorrect Answers:

`ping`, antimalware, and `ipconfig` are incorrect.

The `ping` tool does not show port numbers.

An antimalware tool would not show port numbers.

The `ipconfig` tool would not list port numbers.

Correct Answer:

Transformer is correct.

Transformers supply the correct voltage to equipment or facilities.

Incorrect Answers:

ESD strap, ESD mat, and capacitor is incorrect.

Electrostatic discharge (ESD) straps prevent sensitive electronic equipment from being damaged by voltage differences.

Electrostatic discharge (ESD) mats prevent sensitive electronic equipment from being damaged by voltage differences.

Capacitors store electronic charges.

Correct Answer:

`mount` is correct.

The Linux file system must be mounted to a directory to be accessible.

Incorrect Answers:

`fdisk`, `map`, and `net use` are incorrect.

`fdisk` works with Linux disk partitioning.

`map` is an old Novell command used to map drive letters to Novell server file systems.

`net use` is a Windows command used to map drive letters.

Correct Answer:

Bash is correct.

Bash scripts are commonly used on Linux servers to automate tasks.

Incorrect Answers:

PowerShell, VBS, and Batch are incorrect.

PowerShell scripts are used in Windows environments.

VBS scripts are used in Windows environments.

Batch scripts are used in Windows environments.

Correct Answer:

128 is correct.

IPv6 addresses consist of 128 bits.

Incorrect Answers:

32, 64, and 126 are incorrect.

An IPv4 address consists of 32 bits.

A modern processor’s data path is normally 64 bits wide.

126 bits does not reflect the number of bits in an IPv6 address.

Correct Answer:

NEMA is correct.

The National Electronic Manufacturers Association (NEMA) plug connector is common in North America.

Incorrect Answers:

NUMA, Edison, and Einstein are incorrect.

NUMA stands for non-uniform memory access; it is related to multiprocessor systems and how they handle memory.

Edison connectors have three prongs and are rounded.

Einstein was a theoretical physicist; there is no such thing as an Einstein power connector.