QUESTION 11 You are the network administrator at Cisco Highway. You want to enable VTP pruning on the entire Cisco Highway management domain. What action should you take?
A. Enable VTP pruning on any client switch in the management domain.
B. Enable VTP pruning on any switch in the management domain.
C. Enable VTP pruning on every switch in the management domain.
D. Enable VTP pruning on a VTP server in the management domain.
E. Disable VTP pruning on a VTP server in the management domain. Answer: D Explanation: Enabling VTP pruning on a VTP server allows pruning for the entire management domain. VTP pruning takes effect several seconds after you enable it. By default, VLANs 2 through 1000 are pruning-eligible. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 117
QUESTION 12 In which of the following states can HSRP routers on a LAN be in? (Choose all that apply.)
A. Standby
B. Idle
C. Init
D. Backup
E. Established
F. Active Answer: A, C, F Explanation: Using HSRP, a set of routers works in concert to present the illusion of a single virtual router to the hosts on the LAN. This set is known as an HSRP group or a standby group. A single router elected from the group is responsible for forwarding the packets that hosts send to the virtual router. This router is known as the Active router. Another router is elected as the Standby router. In the event that the Active router fails, the Standby assumes the packet-forwarding duties of the Active router. Although an arbitrary number of routers may run HSRP, only the Active router forwards the packets sent to the virtual router. Reference: http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094a91.shtml
QUESTION 13 With regard to Layer 2 broadcast traffic, which of the following statements is valid?
A. Layer 2 broadcast traffic is blocked by Layer 3 devices.
B. A new packet is sent each time the client requests it.
C. Each frame uses a special address for which only interested clients listen.
D. It is the most efficient way to send data to a small group of clients.
E. Each packet is refreshed when requested. Answer: A Explanation: LAN broadcasts do not cross routers (Layer 3 devices). Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 17
QUESTION 14 You are the network administrator at Cisco Highway. The Cisco Highway network contains a Cisco switch with a redundant power supply. The two power supplies are of the same wattage. How is the total power available for use by the switch when both of the power supplies are operating normally? (Choose all that apply.)
A. Total power of one supply.
B. Total combined power of both supplies.
C. Total power is the sum of one-half of total power of both supplies.
D. Total power required is shared nearly equally by both supplies. Answer: C D Explanation: Specifying the redundant keyword enables redundancy. In a redundant configuration, the total power drawn from both supplies is at no time greater than the capability of one supply. If one supply malfunctions, the other supply can take over the entire system load. When you install and turn on two power supplies, each concurrently provides approximately half of the required power to the system. Load sharing and redundancy are enabled automatically; no software configuration is required. Reference: http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007 e6f6.html
QUESTION 15 You are a technician at Cisco Highway. You inform your newly appointed Cisco Highway trainee that IP routing redundancy is susceptible to first-hop router failure. Your trainee now wants to know which protocols have been developed to protect against first-hop router failure. What would your reply be? (Choose all that apply.)
A. HSRP
B. VRRP
C. ICMP
D. GLBP
E. MSTP
F. IRDP Answer: A B D F
D: GLBP is not used for redundancy. Not E: MSTP (multiple spanning tree protocol) is not used for redundancy
QUESTION 16 Which of the following routing protocols are dense-mode multicast routing protocols? (Choose all that apply.)
A. PIM-SM
B. PIM-DM
C. MOSPF
D. OSPF
E. DVMRPAnswer: B C E Explanation: Dense mode routing protocols include the following:
- Distance Vector Multicast Routing Protocol (DVMRP)
- Multicast Open Shortest Path First (MOSPF)
- Protocol-Independent Multicast Dense Mode (PIM DM) Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 313
QUESTION 17 You are a technician at Cisco Highway. You inform your newly appointed Cisco Highway trainee that all devices at all the layers in a hierarchical model should have basic security measures implemented. Your trainee now wants to know what these basic security measures are. What would your reply be? (Choose all that apply.)
A. Physical security.
B. Privilege levels.
C. Security surveillance.
D. Password protection.
E. Managed remote access.
F. Inventory audit. Answer: A B D E Explanation: The policy to control access to network devices should be one of the first components of the access policy. All devices at every layer of the campus network should have a plan to provide for the following:
- Physical security
- Passwords
- Privilege levels to allow limited access to a network device
- Limiting virtual terminal or telnet access Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 368
QUESTION 18 Which one of the following describes hardware-based PDU header rewriting and forwarding based on specific information regarding one or more OSI layers?
A. Multiplayer switching
B. Cisco express routing
C. Multilayer switching
D. Multilayer routing
E. Router express forwarding Answer: C Explanation: Multilayer Switching Switch Engine (MLS-SE) - The switching entity that handles the function of moving and rewriting packets. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 219
QUESTION 19 According to the IEEE 802.1s standard, what is the purpose of MST?
A. It is the spanning-tree implementation used by non-Cisco 892.1Q switches.
B. It runs a separate instance of STP for each VLAN.
C. It allows a VLAN bridge to use multiple spanning trees to prevent Layer 2 loops.
D. It creates a single loop-tree structure that spans the entire Layer 2 network. Answer: C Explanation: IEEE 802.1s MST Overview Releases 12.1(11b)EX and later releases support MST. MST in this release is based on the draft version of the IEEE standard. 802.1s for MST is an amendment to 802.1 Q MST extends the IEEE 802.1w rapid spanning tree (RST) algorithm to multiple spanning trees. This extension provides both rapid convergence and load balancing in a VLAN environment. MST converges faster than PVST+. MST is backward compatible with 802.1D STP, 802.1w (rapid spanning tree protocol [RSTP]), and the Cisco PVST+ architecture. MST allows you to build multiple spanning trees over trunks. You can group and associate VLANs to spanning tree instances. Each instance can have a topology independent of other spanning tree instances. This new architecture provides multiple forwarding paths for data traffic and enables load balancing. Network fault tolerance is improved because a failure in one instance (forwarding path) does not affect other instances (forwarding paths). In large networks, you can more easily administer the network and use redundant paths by locating different VLAN and spanning tree instance assignments in different parts of the network. A spanning tree instance can exist only on bridges that have compatible VLAN instance assignments. You must configure a set of bridges with the same MST configuration information, which allows them to participate in a specific set of spanning tree instances. Interconnected bridges that have the same MST configuration are referred to as an MST region. Reference: http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007 e71a.php#1050594
QUESTION 20 Which one of the following processes plays a major role in the creation of the CEF adjacency table?
A. Address Resolution Protocol (ARP)
B. NetFlow switching
C. PDU header rewrite
D. Hello packet exchange Answer: A Explanation: The next step in processing a packet in a Layer 3 device is to determine the Payer 2 information needed to switch the packet to the next hop. This Layer 2 information is generally contained in the ARP cache table. Cisco Express Forwarding creates a adjacency table to prepend the layer 2 information. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 412
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