Networking three

It assigns a separate collision domain to each port.

Why does an Ethernet switch eliminate collision negative effects?

Peer-to-peer

Resource-sharing model using access control lists saved on EACH computer?

Implementing the Internet Protocol (IP) to distinguish and forward data between networks

Primary function of a router?

DHCP reservations

Option (other than static) for hosts to consistently use the same IP config?

To intercept and copy signals passing over a cable for monitoring or analysis

Primary function of a network tap?

114.58.12.0, B) 114.122.66.12, D) 114.0.0.15

Which IPs belong to 114.0.0.0 Class A network? (Select three)

143 (IMAP)

Protocol storing messages on server, syncs across devices, keeps until user deletes — port number?

It allows devices to send data over multiple bands or channels.

Main advantage of Wi-Fi 7's MLO (Multi-Link Operation)?

802.11ac

Wireless standard, 5 GHz, up to 2.6 Gbps?

By negotiating an 802.11 radio link for large file transfers

How do Bluetooth 3/4 adapters achieve faster data transfer?

Cable tester

Tool energizes each wire; LED didn't light for some wires — what tool?

Bluetooth

Common PAN technology example?

By distributing client requests to multiple servers to handle varying loads

How does a load balancer contribute to availability?

TCP, because it ensures reliable delivery through acknowledgments, retransmissions, and sequence numbers.

Secure web server, packets lost due to congestion — which protocol ensures reliable delivery?

Increased range, speed, and messaging capacity with improved power efficiency

Improvements Bluetooth 5 offers?

To determine which signals are stronger and likely to provide better performance

Why compare dBm values in a Wi-Fi analyzer?

To manage and control industrial processes and machinery.

Primary function of an embedded system?

To determine whether the device is PoE-capable and set an appropriate power supply level

Purpose of the detection phase in PoE?

To resolve a hostname or FQDN to an IP address

Primary purpose of a DNS query?

Tone generator

Trace a Cat 6 UTP cable through ceiling/walls — tool?

To offer highly available environments for critical applications

Why are datacenters in purpose-built facilities?

To divide the VLAN into multiple secure broadcast domains through managed switches, allowing additional remote access via VPNs

Admin expanding network with switches/VLANs/IP subnets — purpose?

To connect devices via radios and antennas

Primary function of a WLAN?

SMTP

Protocol to send email from client to mail server?

UDP, because it does not guarantee reliable delivery

Files incomplete/corrupted, delays resending — likely protocol issue?

As 12 hexadecimal digits, each representing half a byte

How is a MAC address typically represented?

The email server's application protocol is not functioning properly.

Email service inaccessible, network/IP fine, suspect Application Layer — most likely cause?

PTR Record

External systems rejecting email, citing lack of reverse DNS — which record to configure?

SPF Record

DNS record specifying authorized mail servers (anti-spam)?

NAT and D) Proxy device

Class B private IP — mechanisms to access internet? (Select all)

DHCP

Protocol to request/receive an IP address from a server?

RADIUS

AAA component that does NOT store credentials but forwards data between devices?

255.255.255.128

SOHO network 192.168.1.0/24, split into TWO equal subnets — subnet mask?

Implement SSH with public key authentication...

Secure Telnet-to-SSH transition — best action?

VPN

Protocol that tunnels traffic securely with encryption/authentication?

MAC address

What does an Ethernet switch use to forward frames?

Tone generator and probe

Identify which wall jack connects to a severed cable?

Basic mobile internet access with improved speed compared to 2G

What does 3G primarily provide?

To distribute client requests across server nodes in a farm or pool

Primary function of a load balancer?

Maximum bandwidth of 54 Mbps, D) Backward compatible with 802.11b devices, E) Operates in the 2.4 GHz range

Characteristics of 802.11g? (Select three)

It reduces the likelihood of configuration errors and simplifies network management.

Why is using a DHCP server preferable to manually assigning static IP addresses in a network?

802.3af

Which IEEE standard defines PoE as providing up to 13 W of usable power for devices like basic VoIP phones and wireless access points?

RDP

A network technician securely connects to a remote server on port 3389. What protocol does the technician use?

iSCSI

Which of these technologies is typically used to achieve block-level access in a SAN?

By utilizing WAN communications such as cellular or satellite links

How do embedded systems within a Supervisory Control and Data Acquisition (SCADA) system typically communicate with field devices?

Uses equipment leased from an ISP

Which of the following is a characteristic of most private or enterprise WANs?

TCP and Port 389

An organization needs to set up a centralized directory service to manage user authentication and access to resources across the network.

Which protocol and port combination should the IT team configure to enable this service?

MAN

A college that has several campuses located in different parts of the city has hired a network technician. What type of network will the technician most likely be working on?

To interconnect multiple switch units through a fast backplane

Why might a company choose to use modular switches in its network?