CCNA 2 – Chapter 2 – Exam Answer 2016 100%

CCNA 2 – Chapter 2 – Basic Switching Concepts and Configuration Exam Answer 2016 100%

1. Which type of cable does a network administrator need to connect a PC to a switch to recover it after the Cisco IOS software fails to load?

• a console cable
• a straight-through cable
• a coaxial cable
• a crossover cable

2. Which interface is the default location that would contain the IP address used to manage a 24-port Ethernet switch?

• Fa0/0
• interface connected to the default gateway
• VLAN 99
• VLAN 1
• Fa0/1

3. While troubleshooting a connectivity problem, a network administrator notices that a switch port status LED is alternating between green and amber. What could this LED indicate?

• The port is experiencing errors.
• The port is administratively down.
• The port has an active link with normal traffic activity.
• The port has no link.
• A PC is using the wrong cable to connect to the port.

4. In which type of attack does a malicious node request all available IP addresses in the address pool of a DHCP server in order to prevent legitimate hosts from obtaining network access?

• MAC address flooding
• DHCP spoofing
• CAM table overflow
• DHCP starvation

5. What impact does the use of the mdix auto configuration command have on an Ethernet interface on a switch?

• automatically detects interface speed
• automatically assigns the first detected MAC address to an interface
• automatically detects duplex settings
• automatically detects copper cable type

6. Which command displays information about the auto-MDIX setting for a specific interface?

• show controllers
• show running-config
• show interfaces
• show processes

7.

CCNA 2 – Chapter 2 – Basic Switching Concepts and Configuration Exam Answer 2016 100%

Refer to the exhibit. What media issue might exist on the link connected to Fa0/1 based on the show interface command?

• There could be an issue with a faulty NIC.
• The cable attaching the host to port Fa0/1 might be too long.
• The interface might be configured as half-duplex.
• The bandwidth parameter on the interface might be too high.
• There could be too much electrical interference and noise on the link.

8.

CCNA 2 – Chapter 2 – Switching Concepts Exam Answer 2016 100%

Refer to the exhibit. The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement?

• Reconfigure the RSA key.
• Modify the transport input command.
• Use SSH version 1.
• Configure SSH on a different line.

9. A production switch is reloaded and finishes with a Switch> prompt. What two facts can be determined? (Choose two.)

• The boot process was interrupted.
• A full version of the Cisco IOS was located and loaded.
• The switch did not locate the Cisco IOS in flash, so it defaulted to ROM.
• POST occurred normally.
• There is not enough RAM or flash on this router.

10. Which protocol or service sends broadcasts containing the Cisco IOS software version of the sending device, and the packets of which can be captured by malicious hosts on the network?

• DHCP
• SSH
• CDP
• DNS

11. Match the step to each switch boot sequence description. (not all options are used.)

Match the step to each switch boot sequence description. (not all options are used.)

12. Which method would mitigate a MAC address flooding attack?

• configuring port security
• increasing the speed of switch ports
• increasing the size of the CAM table
• using ACLs to filter broadcast traffic on the switch

13. Which two basic functions are performed by network security tools? (Choose two.)

• writing a security policy document for protecting networks
• controlling physical access to user devices
• revealing the type of information an attacker is able to gather from monitoring network traffic
• simulating attacks against the production network to determine any existing vulnerabilities
• educating employees about social engineering attacks

14. Which action will bring an error-disabled switch port back to an operational state?

• Issue the switchport mode access command on the interface.
• Issue the shutdown and then no shutdown interface commands.
• Remove and reconfigure port security on the interface.
• Clear the MAC address table on the switch.

15. Fill in the blank.
When port security is enabled, a switch port uses the default violation mode of     shutdown     until specifically configured to use a different violation mode.

16.

CCNA 2 – Chapter 2 – Basic Switching Concepts and Configuration Exam Answer 2016 100%

Refer to the exhibit. Which S1 switch port interface or interfaces should be configured with the ip dhcp snooping trust command if best practices are implemented?

• only unused ports
• only the G0/2, G0/3, and G0/4 ports
• only the G0/1, G0/2, G0/3, and G0/4 ports
• only the G0/1 port
• only the G0/1 and G0/24 ports

17. Which two statements are true about using full-duplex Fast Ethernet? (Choose two.)

• Latency is reduced because the NIC processes frames faster.
• Performance is improved because the NIC is able to detect collisions.
• Full-duplex Fast Ethernet offers 100 percent efficiency in both directions.
• Performance is improved with bidirectional data flow.
• Nodes operate in full-duplex with unidirectional data flow.

18.

CCNA 2 – Chapter 2 – Switching Concepts Exam Answer 2016 100%

Refer to the exhibit. Port Fa0/2 has already been configured appropriately. The IP phone and PC work properly. Which switch configuration would be most appropriate for port Fa0/2 if the network administrator has the following goals?

• SWA(config-if)# switchport port-security
  SWA(config-if)# switchport port-security mac-address sticky
• SWA(config-if)# switchport port-security mac-address sticky
  SWA(config-if)# switchport port-security maximum 2
• SWA(config-if)# switchport port-security
  SWA(config-if)# switchport port-security maximum 2
  SWA(config-if)# switchport port-security mac-address sticky
• SWA(config-if)# switchport port-security
  SWA(config-if)# switchport port-security maximum 2
  SWA(config-if)# switchport port-security mac-address sticky
  SWA(config-if)# switchport port-security violation restrict

19.

CCNA 2 – Chapter 2 – Basic Switching Concepts and Configuration Exam Answer 2016 100%

Refer to the exhibit. Which event will take place if there is a port security violation on switch S1 interface Fa0/1?

• A syslog message is logged.
• The interface will go into error-disabled state.
• A notification is sent.
• Packets with unknown source addresses will be dropped.

20. The network administrator enters the following commands on a Cisco switch:
            Switch(config)# interface vlan1
            Switch(config-if)# ip address 192.168.1.2 255.255.255.0
            Switch(config-if)# no shutdown
What is the effect of entering these commands?

• The switch is able to forward frames to remote networks.
• Users on the 192.168.1.0/24 subnet are able to ping the switch at IP address 192.168.1.2.
• All devices attached to this switch must be in the 192.168.1.0/24 subnet to communicate.
• The address of the default gateway for this LAN is 192.168.1.2/24.

21. Which two statements are true regarding switch port security? (Choose two.)

• Dynamically learned secure MAC addresses are lost when the switch reboots.
• After entering the sticky parameter, only MAC addresses subsequently learned are converted to secure MAC addresses.
• If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached.
• The three configurable violation modes all log violations via SNMP.
• The three configurable violation modes all require user intervention to re-enable ports.

22. Fill in the blank.
full-duplex       communication allows both ends of a connection to transmit and receive data simultaneously.

23. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Fill in the blank.
Do not use abbreviations.What is the missing command on S1?
ip address 192.168.99.2 255.255.255.0

24.

CCNA 2 – Chapter 2 – Basic Switching Concepts and Configuration Exam Answer 2016 100%

Refer to the exhibit. What can be determined about port security from the information that is shown?

• The port has two attached devices.
• The port has the maximum number of MAC addresses that is supported by a Layer 2 switch port which is configured for port security.
• The port has been shut down.
• The port violation mode is the default for any port that has port security enabled.