C. All unicast ports
D. All except the port that received the frame
A. Hubs forward broadcast traffic out every port, switches do not.
B. Switches eliminate the need for thicknet cabling.
C. Switches support multiple physical connections to hosts.
D. Switches forward unicast traffic only to a specific destination port.
A. They protect against single or multiple link failures.
B. They can contain up to eight physical links.
C. They can protect against a switch failure by calculating multiple paths to the root.
D. They can be configured to enter a down state if a certain number of links in the bundle fail.
A. It calculates a root bridge.
B. It uses a cost value on each port to determine the path to the root bridge.
C. It ensures a loop-free topology.
D. It provides load-sharing capability.
A. They can increase the security of your network.
B. They can interconnect multiple broadcast domains.
C. They can limit the amount of broadcast traffic between groups of devices.
D. A and C but not B
A. Routers provide broadcast domain separation.
B. Hubs provide collision domain separation.
C. VLANs provide broadcast domain separation.
D. Switches provide collision domain separation.
A. Aggregates all source/destination conversations into a single conversation equally across all links
B. Uses the same physical link for each source/destination conversation
C. Statistically balances conversations based on the source MAC address
D. Distributes egress frames equally across all links in the bundle
A. Nothing because the port threshold of 2 active links has not been reached
B. The LAG begins using equal costing across all links because of the dynamiccost parameter.
C. The LAG updates its BPDUs and recalculates STP.
D. The LAG changes its OSPF cost for the bundle but takes no other action.
A. STP provides for link backup between switches.
B. A loop-free topology is more efficient.
C. Redundant paths can lead to broadcast storms and FDB instability.
D. STP updates the OSPF routing protocol cost upon link failure.
A. STP elects a root and selectively blocks higher cost paths to the root from each bridge.
B. STP blocks ports on all bridges that are not the root bridge.
C. STP proactively changes all paths to the root bridge so that they are equal cost.
D. STP uses BPDUs to set up a virtual path between each source and destination pair.
A. The bridge priority
B. The MAC address of the lowest switch port
C. The bridge priority unless there is a tie, and then the lowest MAC address
D. The BID unless there are multiple bridge priorities that are equal
A. The alternate port has a higher path to the root.
B. The back-up port has a lower priority.
C. The back-up port is used only when the alternate port fails.
D. The back-up port is on the same switch as the designated switch.
A. They provide for broadcast domain separation.
B. A single VLAN can exist on multiple switches.
C. They require a separate physical connection per VLAN for interswitch links.
D. They use a 12-bit VLAN ID to identify each VLAN.
A. VLAN trunking
B. VLAN tunneling
C. VLAN stacking
D. IEEE 802.1p
A. Excessive broadcasts would make the network unusable.
B. Ethernet lacks hierarchical addressing.
C. Ethernet switches cannot build forwarding tables.
D. Ethernet cables can only be of a limited length.
A. It is embedded in the device’s firmware.
B. It provides for a logical hierarchy.
C. It allows for duplicate addresses on the Internet.
D. Addresses are not required to be registered if they are used on the Internet.
A. The TTL field ensures that IP packets have a limited lifetime.
B. The maximum size is 65,535 octets.
C. The total length field includes the IP header.
D. The current version is IPv5.
A. Class A
B. Class B
C. Class C
D. None of the above
A. It reduces the Internet routing table size.
B. You can identify the host portion of the address without the need for a mask.
C. It creates greater internal address flexibility.
D. It allows for more efficient use of address space
A. Host 0 on the 10.1.1.0 subnet
B. Network 10.1.1.0
C. Illegal because 10.0.0.0 is a Class A
D. Subnet 10.1.1.0
B. Route aggregation
D. Classless addressing
A. subnet 10.0.0.0/16
B. subnet 10.255.0.0/16
C. subnet 10.10.10.0/16
D. host 10.10.10.0/32
A. /20 for the first eight subnets, /23 for the remaining 13
B. /20 for the first eight subnets, /24 for the remaining 13
C. /24 for all subnets
D. /19 for the first eight subnets, /24 for the remaining 13