QUESTION 23 Switch ports operating in which two roles will forward traffic according to the IEEE 802.1w standard?

QUESTION 23
Switch ports operating in which two roles will forward traffic according to the IEEE 802.1w standard? (Choose two.)

A. alternate
B. backup
C. designated
D. disabled
E. root

Answer: CE

Root Port:The SwitchPort on each switch that has best root path cost to the root.

Designated Port: The switch port on the network segment which has best root path cost to the root.

Alternate Port:Which has the best alternate path to the Root Bridge other than the path that Root Port takes.This path is less desirable than path of Root Port.

Backup Port:Is rudundent path to a Network Segment where the switch port is connected.

Disabled: The Port is Disabled for the traffic to pass through it.

QUESTION 22 Refer to the exhibit. Which three statements correctly describe Network Device A?

QUESTION 22 Refer to the exhibit. Which three statements correctly describe Network Device A? (Choose three.)

A. With a network wide mask of 255.255.255.128, each interface does not require an IP address.
B. With a network wide mask of 255.255.255.128, each interface does require an IP address on a unique IP subnet.
C. With a network wide mask of 255.255.255.0, must be a Layer 2 device for the PCs to communicate with each other.
D. With a network wide mask of 255.255.255.0, must be a Layer 3 device for the PCs to communicate with each other.
E. With a network wide mask of 255.255.254.0, each interface does not require an IP address.

Answer: BDE

Explanation:

If Subnet Mask is 255.255.255.128 the hosts vary from x.x.x.0 - x.x.x.127 & x.x.x.128- x.x.x.255,so the IP Addresses of 2 hosts fall in different subnets so each interface needs an IP an address so that they can communicate each other.

If Subnet Mask is 255.255.255.0 the 2 specified hosts fall in differnt subnets so they need a Layer 3 device to commicate.

If Subnet Mask is 255.255.254.0 the 2 specfied hosts are in same subnet so are in network address and can be accomidated in same Layer 2 domain and can communicate with each other directly using the Layer 2 adddress.

QUESTION 21 Refer to the exhibit. Which three statements are true about how router JAX will choose a path to the 10.1.3.0/24 network when different routing protocols are configured?

QUESTION 21 Refer to the exhibit. Which three statements are true about how router JAX will choose a path to the 10.1.3.0/24 network when different routing protocols are configured? (Choose three.)

A. By default, if RIPv2 is the routing protocol, only the path JAX-ORL will be installed into the routing table.
B. The equal cost paths JAX-CHI-ORL and JAX- NY-ORL will be installed in the routing table if RIPv2 is the
routing protocol.
C. When EIGRP is the routing protocol, only the path JAX-ORL will be installed in the routing table by default.
D. When EIGRP is the routing protocol, the equal cost paths JAX-CHI-ORL, and JAX-NY-ORL will be installed in the routing table by default.
E. With EIGRP and OSPF both running on the network with their default configurations, the EIGRP paths will be installed in the routing table.
F. The OSPF paths will be installed in the routing table, if EIGRP and OSPF are both running on the network with their default configurations.

Answer: ADE

Explanation:

Only RIP protocol used Path selection is done by using HOP count as the metric,path with least HOP's will be taken as best path so option A.

Only EIGRP protocol used,EIGRP selects the best using a combinations of 5 metrics Bandwidth,Delay,Reliability,Load & MTU.If Metric is the same Load Balancing occurs
between the paths,Option D where 2 equal cost paths are taken.

If there are Mulitple Routing protocols used the Route with the Best AD is installed to the routing table.

OSPF and EIGRP are the 2 Routing protocols used and both have Route to a network then EIGRP path will be chsen to OSPF since lower AD.So Option E.

QUESTION 20 Which three statements are typical characteristics of VLAN arrangements?

QUESTION 20
Which three statements are typical characteristics of VLAN arrangements? (Choose three.)

A. A new switch has no VLANs configured.
B. Connectivity between VLANs requires a Layer 3 device.
C. VLANs typically decrease the number of collision domains.
D. Each VLAN uses a separate address space.
E. A switch maintains a separate bridging table for each VLAN.
F. VLANs cannot span multiple switches.

Answer: BDE

Explanation:

VLAN are physical boundaries in logical way,every VLAN has its own subnet.To communicate between these subnets it has to go through a Layer3 device. An each VLAN
acts as a seperate network has its own brodcast domain.So it maiantains its own bridging or MAC Address table.A frame in a VLAN stays in that VLAN,to go into
differnet VLAN has to go through a Layer 3 device.

QUESTION 19 Refer to the exhibit. The networks connected to router R2 have been summarized as a 192.168.176.0/21 route and sent to R1. Which two packet destination addresses will R1 forward to R2?

QUESTION 19
Refer to the exhibit. The networks connected to router R2 have been summarized as a 192.168.176.0/21 route and sent to R1. Which two packet destination addresses will R1 forward to R2? (Choose two.)


A. 192.168.194.160
B. 192.168.183.41
C. 192.168.159.2
D. 192.168.183.255
E. 192.168.179.4
F. 192.168.184.45

Answer: BE


Explanation:Will be done

QUESTION 18 A network administrator changes the configuration register to 0x2142 and reboots the router. What are two results of making this change?

QUESTION 18
A network administrator changes the configuration register to 0x2142 and reboots the router. What are two results of making this change? (Choose two.)

A. The IOS image will be ignored.
B. The router will prompt to enter initial configuration mode.
C. The router will boot to ROM.
D. Any configuration entries in NVRAM will be ignored.
E. The configuration in flash memory will be booted.

Answer: BD


Explanation:
The command to set the Configuration Register to 0x2142 is done in Global Configuration mode,It is done to ignore current
startup sonfiguration and initally after reload the router will ask for initial configuration,

# show version command can be used to see the confreg set to.

router(config)#config-register 0x2142

QUESTION 17: