Correct Answers :

[B]

Explanation :

The access list is misconfigured. It must match the address that will be allowed through the NAT process. The access list is configured for 192.168.2.0/24. The private IP address network is 192.168.1.0/24. The NAT pool can overlap with a physical interface. It allows for the IP address configured on the physical interface to also be used for NAT.

Correct Answers :

[D]

Explanation :

When a DHCP server sends the DHCP Offer message in response to a DHCP Discover message, the client’s MAC address is used in the response.

Correct Answers :

[C]

Explanation :

Router C will become the active router since it has the highest priority. The default priority of HSRP is 100, and therefore, the router with the highest priority will become the active router. It is important to note that nothing will change if preemption is not configured on the routers.

Correct Answers :

[C]

Explanation :

The DHCP Negative Acknowledgment (NACK) message is issued by the DHCP server to the client when a client requests an IP address the DHCP cannot lease. This often happens when two DHCP servers are misconfigured in the same LAN with two different scopes. One server will issue the NACK message when it hears the request destined for the other DHCP server.

Correct Answers :

[C]

Explanation :

The Cisco Dynamic Multipoint Virtual Private Network (DMVPN) is alwaysconfigured in a hub-and-spoke topology. The central router creates a multiport GRE connection between all of the branch routers.

Correct Answers :

[C]

Explanation :

A trust boundary is the point in the network where the QoS markings are trusted from the devices connected to it. A network administrator will create a trust boundary where a VoIP phone will placed. Since the VoIP phone will be trusted, the markings will be accepted and used for priority throughout the network. The trust boundary should always be placed closest to the IT-controlled equipment.

Correct Answers :

[D]

Explanation :

Both the customer edge (CE) routers and the provider edge (PE) routers can host area 0. However, the service provider must support area 0, called the super backbone, on its PE routers since all areas must be connected to area 0. The customer chooses whether the CE participates in area 0.

Correct Answers :

[B]

Explanation :

Internet Protocol Security (IPSec) does not support multicast packets. If you require both, you can set up a GRE tunnel for the multicast and broadcast traffic, then encrypt only the data over IPSec. However, by itself IPSec does not support multicast or broadcast traffic.

Correct Answers :

[A]

Explanation :

The Differentiated Services Code Point (DSCP) is a layer 3 QoS marking for routers and layer 3 devices. The DSCP markings are located in the Type of Service (ToS) field in an IP header. Class of Service (CoS) is a layer 2 QoS service marking found in 802.1Q frames.

Correct Answers :

[B]

Explanation :

Point-to-Point Protocol (PPP) is a layer 2 wide area network (WAN) protocol. PPP supports Challenge Handshake Authentication Protocol (CHAP), which secures connections. Although Metro Ethernet is built site to site by the service provider, there is no guarantee of security in the form of authentication.

Correct Answers :

[C]

Explanation :

Time to Live (TTL) is a field in the IP header that prevents packets from endlessly routing in networks. Each time a packet is routed, the router’s responsibility is to decrement the TTL by one. When the TTL reaches zero, the packet is considered unrouteable and dropped.

Correct Answers :

[B]

Explanation :

Link State Advertisement (LSA) packets communicate the topology of the local router with other routers in the OSPF area. The information contained in the LSA packet is a summary of links the local router’s topology consists of.

Correct Answers :

[C]

Explanation :

The entries with the dash in the Age column represent the physical interfaces of the router. If the entries were configured statically, their type would reflect a status of static.

Correct Answers :

[D]

Explanation :

The summary route of 172.16.32.0/21 contains 172.16.38.0/24 as a valid network route. The /21 CIDR mask defines networks in multiples of 8 in the third octet of the network address. Therefore, the next network address is 172.16.40.0/21.

Correct Answers :

[D]

Explanation :

When you want to turn on the layer 3 functionality of a switch, you must configure the command ip routing in global configuration. This is required when you want to create switched virtual interfaces (SVIs) for VLANs and want to route on the switch between the VLANs. This method of routing is much more efficient since the traffic is routed in the ASICs on the switch.

Correct Answers :

[C]

Explanation :

In the exhibit, packets are being sent to the router via a trunk link. A setup where the packets for VLANs are sent to a router for routing between VLANs is called Router on a Stick (ROAS) routing.

Correct Answers :

[A]

Explanation :

The command network 203.244.234.0 will advertise the 203.244.234.0 network. When you’re configuring RIP, only the network address needs to be configured with the network command.

Correct Answers :

[C]

Explanation :

The administrative distance (AD) of EIGRP is 90. The most common ADs are 90 for EIGRP, 100 for IGRP, 110 for OSPF, and 120 for RIP. The mnemonic of 90 Exotic Indian Oval Rubies will help you remember the order; then starting with EIGRP with a value of 90, increment the following values by 10.

Correct Answers :

[A]

Explanation :

Enhanced Interior Gateway Routing Protocol (EIGRP) uses bandwidth and delay by default for calculating routes. The bandwidth should be set to the actual bandwidth of the link so that routing protocols such as EIGRP can calculate the best route. Delay cannot be set because it is a variable of the interface.

Correct Answers :

[C]

Explanation :

The administrative distance (AD) is a rating of trust between different routing protocols and route methods. This trust scale is important when multiple routes exist to the same destination. Directly connected routes have ADs with the highest level of trust.