What to do with 200 125 ccna book

Answer: A

Explanation:

When you enter global configuration mode and enter a command, it is applied to the running configuration file that is currently running in ram. The configuration of a global command affects the entire router. An example of a global command is one used for the hostname of the router.

Answer: A,B,F

Explanation:

The virtual MAC address of HSRP version 1 is 0000.0C07.ACxx, where xx is the HSRP

group number in hexadecimal based on the respective interface. For example, HSRP group 10 uses the HSRP virtual MAC address of 0000.0C07.AC0A. HSRP version 2 uses a virtual MAC address of 0000.0C9F.FXXX (XXX: HSRP group in hexadecimal).

Answer: A

Explanation:

Spanning Tree Protocol convergence (Layer 2 convergence) happens when bridges and switches have transitioned to either the forwarding or blocking state. When layer 2 is converged, root bridge is elected and all port roles (Root, Designated and Non-Designated) in all switches are selected.

Answer: C,D

Explanation:

The simple syntax of static route:

ip route destination-network-address subnet-mask {next-hop-IP-address | exit-interface}

+ destination-network-address: destination network address of the remote network

+ subnet mask: subnet mask of the destination network

+ next-hop-IP-address: the IP address of the receiving interface on the next-hop router

+ exit-interface: the local interface of this router where the packets will go out In the statement u201cip route 10.5.6.0 255.255.255.0 fa0/0:

+ 10.5.6.0 255.255.255.0: the destination network

+fa0/0: the exit-interface

Answer: C

Explanation:

EIGRP uses the Neighbor Table to list adjacent routers. The Topology Table list all the learned routers to destination whilst the Routing Table contains the best route to a destination, which is known as the Successor. The Feasible Successor is a backup route to a destination which is kept in the Topology Table.

Answer: C

Explanation:

A u201cnative VLAN mismatchu201d error will appear by CDP if there is a native VLAN mismatch on an 802.1Q link. u201cVLAN mismatchu201d can cause traffic from one vlan to leak into another vlan.

Answer: A,C,E

Explanation:

SNMPv1/v2 can neither authenticate the source of a management message nor provide encryption. Without authentication, it is possible for nonauthorized users to exercise SNMP network management functions. It is also possible for nonauthorized users to eavesdrop on management information as it passes from managed systems to the management system. Because of these deficiencies, many SNMPv1/v2 implementations are limited to simply a read-only capability, reducing their utility to that of a network monitor; no network control applications can be supported. To correct the security deficiencies of SNMPv1/v2, SNMPv3 was issued as a set of Proposed Standards in January 1998. -> A is correct.

The two additional messages are added in SNMP2 (compared to SNMPv1)

GetBulkRequest The GetBulkRequest message enables an SNMP manager to access large chunks of data. GetBulkRequest allows an agent to respond with as much information as will fit in the response PDU. Agents that cannot provide values for all variables in a list will send partial information. -> E is correct.

InformRequest The InformRequest message allows NMS stations to share trap information. (Traps are issued by SNMP agents when a device change occurs.) InformRequest messages are generally used between NMS stations, not between NMS stations and agents. -> C is correct.

Note: These two messages are carried over SNMPv3.

Answer: B,C,D

Explanation:

This question is to check the spanning tree election problem.

1. First, select the root bridge, which can be accomplished by comparing the bridge ID, the smallest will be selected. Bridge-id= bridge priority + MAC address. The three switches in the figure all have the default priority, so we should compare the MAC address, it is easy to find that SwitchB is the root bridge.

2. Select the root port on the non-root bridge, which can be completed through comparing root path cost. The smallest will be selected as the root port.

3. Next, select the Designated Port. First, compare the path cost, if the costs happen to be the same, then compare the BID, still the smallest will be selected. Each link has a DP. Based on the exhibit above, we can find DP on each link. The DP on the link between SwitchA and SwitchC is SwitchA'Fa0/1, because it has the smallest MAC address.

Topic 7, Routing Technologies

664.A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network?

A. a directly connected interface with an address of 192.168.10.254/24

B. a static route to network 192.168.10.0/24

C. a RIP update for network 192.168.10.0/24

D. an OSPF update for network 192.168.0.0/16

E. a default route with a next hop address of 192.168.10.1

F. a static route to network 192.168.10.0/24 with a local serial interface configured as the next hop

Answer: C,D

Explanation:

Multiple OSPF processes can be configured on a router using multiple process IDu2021s. The valid process IDu2021s are shown below:

Edge-B(config)#router ospf ?

<1-65535> Process ID

Answer: A

Explanation:

Only router can break up broadcast domains but in this exhibit no router is used so there is only 1 broadcast domain.

For your information, there are 7 collision domains in this exhibit (6 collision domains between hubs & switches + 1 collision between the two switches).