CCNA Quiz — Page 40 (Q420–Q429)

Q420 (none)

What occurs when overlapping Wi-Fi channels are implemented?

A The wireless network becomes vulnerable to unauthorized access.

B Wireless devices are unable to distinguish between different SSIDs

C Users experience poor wireless network performance.

D Network communications are open to eavesdropping.

Q421 (none)

Which technology allows for multiple operating systems to be run on a single host computer?

A virtual routing and forwarding

B network port ID visualization

C virtual device contexts

D Server Virtualization

Q422 (none)

Which two QoS tools provides congestion management? (Choose two) A. CAR

Choose 2 — select all that apply

B CBWFQ

C PQ

D PBR

E FRTS

Q423 (none)

Refer to the exhibit. An administrator must turn off the Cisco Discovery Protocol on the port configured with address last usable address in the 10.0.0.0/30 subnet. Which command set meets the requirement?

A interface gi0/1 no cdp enable

B interface gi0/1 clear cdp table

C interface gi0/0 no cdp advertise-v2

D interface gi0/0 no cdp run

Q424 (none)

What is a role of access points in an enterprise network?

A connect wireless devices to a wired network

B support secure user logins to devices or the network C. integrate with SNMP in preventing DDoS attacks

D serve as a first line of defense in an enterprise network

Q425 (none)

What is a similarity between OM3 and OM4 fiber optic cable?

A Both have a 50 micron core diameter

B Both have a 9 micron core diameter

C Both have a 62.5 micron core diameter

D Both have a 100 micron core diameter

Q426 (none)

Refer to the exhibit. The entire contents of the MAC address table are shown. Sales-4 sends a data frame to Sales-1. What does the switch do as it receives the frame from Sales-4?

A Perform a lookup in the MAC address table and discard the frame due to a missing entry.

B Insert the source MAC address and port into the forwarding table and forward the frame to Sales-1.

C Map the Layer 2 MAC address to the Layer 3 IP address and forward the frame.

D Flood the frame out of all ports except on the port where Sales-1 is connected.

Q427 (none)

What describes the operation of virtual machines?

A Virtual machines are responsible for managing and allocating host hardware resources

B In a virtual machine environment, physical servers must run one operating system at a time.

C Virtual machines are the physical hardware that support a virtual environment.

D Virtual machines are operating system instances that are decoupled from server hardware

Q428 (none)

Refer to the exhibit. Only four switches are participating in the VLAN spanning-tree process. Branch-1 priority 614440 Branch-2: priority 39082416 Branch-3: priority 0 Branch-4: root primary Which switch becomes the permanent root bridge for VLAN 5?

A Branch-1

B Branch-2

C Branch-3

D Branch-4

Q429 (none)

When deploying syslog, which severity level logs informational message?

A 0

B 2

C 4

D 6