Network+ Study Group by PM

A database administrator is configuring a MySQL database for a new application. What port number would MOST likely be used by this service?

• tcp/3306

• tcp/1433

• tcp/443

• tcp/1521

• tcp/3389

A TDR has identified an open circuit on a Category 6A link between buildings. Which of the following would be the BEST next step to resolve this issue?

• Attach a loopback adapter

• Use a fiber transceiver

• Configure both sides for 1000/full

• Install a repeater

• Replace the cable

A security administrator has configured a firewall rule to block all traffic using tcp/1119. Which OSI layer is associated with this rule?

• Layer 1

• Layer 2

• Layer 3

• Layer 4

• Layer 7

A network configuration associates a user's desktop computer with the accounting VLAN. Where is this VLAN configuration defined?

• On the connected switch port

• Settings > Status > Change adapter options

• In the Windows registry

• An A record in the DNS

• In the Active Directory database

Which of the following uses a virtual IP to provide availability if a router fails?

• RAID

• 802.1X

• VRRP

• Full-duplex

• Link aggregation

Answer explanation

The Virtual Router Redundancy Protocol (VRRP)

A company web server has become unresponsive, and a check of the Internet link shows excessive bandwidth use. Which of the following would BEST categorize this event?

• DoS

• Phishing

• On-path attack

• Deauthentication

• Rogue Services

Which of the following would be the MOST likely use of a rollover cable?

• Hardware diagnostics on a router’s serial interface

• Connect two Ethernet laptops without a switch

• Deliver PoE to a remote access point

• Connect to a management port

• Install in a circulating airspace

What OSI layer would be most associated with the following? A bank website shows your current account balance

• Layer 1

• Layer 2

• Layer 3

• Layer 4

• Layer 7

What OSI layer would be most associated with the following? A company blocks tcp/3389 at their Interface firewall

• Layer 1

• Layer 2

• Layer 3

• Layer 4

• Layer 7

What OSI layer would be most associated with the following? An unknown destination MAC is forwarded to all switch interfaces

• Layer 1

• Layer 2

• Layer 3

• Layer 4

• Layer 7