Ccna certification Practice Tests

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 199.  A.  The Bronze QoS profile should be used for bulk data transfer, such as file transfers 

of this nature. The Gold QoS profile should be reserved for lower priority time-sensitive 

protocols such as interactive video. The QoS profile of Platinum should be associated with 

the wireless VoIP phones and time-sensitive protocols. The Silver QoS profile should be 

associated with transactional traffic, such as basic user forms.

 200.  B.  802.1X is a control protocol that can be configured on Cisco and non-Cisco wireless 

LAN controllers to allow only hosts that present a valid certificate on the network. The 

server that arbitrates the authentication is normally a Remote Authentication Dial-In 

User Service (RADIUS). MAC filtering is normally a manual process in which the MAC 

address of the client is entered into a database that the WLC checks before allowing access 

to the wireless network. WPA2 PSK only uses a simple key that is punched into both the 

WLC and the client. Fast Transitioning (FT) allows a client to roam between access points 

without further authentication.

Chapter 3: IP Connectivity (Domain 3)

 1.  D.  The scalability of routes between routers should always be considered when choosing 

a static routing design vs. a dynamic routing design. A few subnets over many routers 

creates a lot of work when a new subnet is created and static routing is being used. 

However, when one router is being used, the administrative overhead is low.

 2.  A.  Routers are grouped into the same autonomous system (AS). When they are within 

the same AS, they can exchange information such as routes to destination networks and 

converge their routing tables. Routing protocols are not normally redistributed between 

ASs because the network is usually managed as one AS. All routers do not necessarily 

use the same routing protocols; many different portions of the network can use different 

protocols. All network IDs are not advertised with the same autonomous system number. 

Routers are normally grouped into one AS logically, such as an organization. Inside that 

organization (AS), many different autonomous system numbers can be used.

 3.  A.  The maximum hop count for RIP is 15. A hop count over 15 hops is considered 

unroutable or unreachable, so the other options are incorrect.

 4.  C.  By default, RIPv2 multicasts the full routing table on all active interfaces every 30 

seconds. RIPv2 does not allow for neighborship through hello packets, such as link-state 

and hybrid dynamic routing protocols. RIPv2 uses multicasts, not broadcasts. RIPv2 

multicasts the full routing table every 30 seconds, not every 60 seconds.

 5.  B.  RIPv2 uses the multicast address 224.0.0.9 to advertise routes. The multicast address 

224.0.0.5 is used by OSPF for hello messages. The multicast address 224.0.0.6 is also used 

by OSPF for hello messages for designated routers (DRs) and backup designated routers 

(BDRs). The multicast address 224.0.0.2 is a special multicast group for all routers and it 

is not used by any particular routing protocol.

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