Cisco CCNP 642-813

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Cisco 642-813 Exam Syllabus Topics:

Cisco Implementing Cisco IP Switched Networks Sample Questions:

1. Refer to the exhibit.

BPDUGuard is enabled on both ports of SwitchA. Initially, LinkA is connected and forwarding traffic. A new LinkB is then attached between SwitchA and HubA. Which two statements about the possible result of attaching the second link are true? (Choose two.)

A) The switch port attached to LinkB does not transition to up.
B) The switch port attached to LinkA immediately transitions to the blocking state.
C) Both switch ports attached to the hub transitions to the blocking state.
D) A heavy traffic load could cause BPDU transmissions to be blocked and leave a switching loop.
E) One or both of the two switch ports attached to the hub goes into the err-disabled state when a BPDU is received.

2. HOTSPOT

3. Refer to the exhibit.

Host A and Host B are connected to the Cisco Catalyst 3550 switch and have been assigned to their respective VLANs. The rest of the 3550 configuration is the default configuration. Host A is able to ping its default gateway, 10.10.10.1, but is unable to ping Host B.
Given the output in the exhibit, which statement is true?

A) Interface VLAN 10 must be configured on the SW1 switch.
B) The global configuration command ip routing must be configured on the SW1 switch.
C) A separate router is needed to support inter-VLAN routing.
D) HSRP must be configured on SW1.
E) VLANs 10 and 15 must be created in the VLAN database mode.
F) VTP must be configured to support inter-VLAN routing.

4. Which description correctly describes a MAC address flooding attack?

A) The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
B) Frames with unique, invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.
C) The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.
D) The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
E) The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.
F) Frames with unique, invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space, and traffic is subsequently flooded out all ports.

5. Refer to the exhibit.

An attacker is connected to interface Fa0/11 on switch A-SW2 and attempts to establish a DHCP server for a man-in-middle attack. Which recommendation, if followed, would mitigate this type of attack?

A) All switch ports connecting to servers in the Server Farm block should be configured as DHCP untrusted ports.
B) All switch ports in the Building Access block should be configured as DHCP untrusted ports.
C) All switch ports connecting to hosts in the Building Access block should be configured as DHCP untrusted ports.
D) All switch ports in the Server Farm block should be configured as DHCP untrusted ports.
E) All switch ports in the Building Access block should be configured as DHCP trusted ports.
F) All switch ports connecting to hosts in the Building Access block should be configured as DHCP trusted ports.

Solutions: