CS6250 COMPUTER NETWORKS
EXAM 1
According to the hot potato routing technique, it is in a network's best
interest to route the traffic so that it exits the network at the router
geographically closest to the one from which it entered the network -
ANSWERS-False
Assume a source and destination host. As packets travel over a path
from the source host to the destination host the packets are handled by
multiple routers over that path. If these routers belong to different
administrative domains, they need to run the same intradomain routing
algorithm, since they are on the same path for that pair of hosts -
ANSWERS-False
The Internet topology has been evolving to an increasingly prominent
hierarchical structure - ANSWERS-False
As Autonomous System operates across multiple administrative domains
- ANSWERS-False
For two ASes to form a peering agreement, they need to find common
ground regarding the internal policies and traffic engineering approaches
that each AS implements - ANSWERS-False
,A Content Distribution Network (CDN) or ISP can operate over multiple
Autonomous Systems - ANSWERS-True
*** Review the diagrams quiz questions for quiz 4 - ANSWERS-
Since the BGP path selection process is fixed, an AS has no control over
which routes are selected - ANSWERS-False
An AS can use LocalPref to control which routers are used as exit points
(for the outgoing traffic), and it can use the MED attribute to control
which routers are used as entry points (for the incoming traffic) -
ANSWERS-True
One of the services provided by IXPs is additional security protections
such as mitigation of DDoS (Distributed Denial of Service) attacks -
ANSWERS-True
There are no costs involved for an AS to participate in an IXP -
ANSWERS-False
Since local traffic stays local at IXPs, the IXP infrastructures deal with
limited volumes of traffic - ANSWERS-False
, When a large provider or Content Delivery Network joins an IXP, this
can act as an incentive for other network to join as well - ANSWERS-
True
At an IXP, the members have a choice to peer privately or publicly -
ANSWERS-True
IXPs leading incentive to establish route servers was to charge the
participants for using it - ANSWERS-False
AN IXP route server does not need to run the BGP protocol to facilitate
the establishment of multi-lateral peering sessions - ANSWERS-False
For multi-lateral BGP peering sessions at an IXP, the participants have
the choice to advertise routes, either directly to other participants, or to
the route server - ANSWERS-False
The data plane functions of a traditional router are implemented in
hardware - ANSWERS-True
The control plane functions of a traditional router are implemented in
software - ANSWERS-True
EXAM 1
According to the hot potato routing technique, it is in a network's best
interest to route the traffic so that it exits the network at the router
geographically closest to the one from which it entered the network -
ANSWERS-False
Assume a source and destination host. As packets travel over a path
from the source host to the destination host the packets are handled by
multiple routers over that path. If these routers belong to different
administrative domains, they need to run the same intradomain routing
algorithm, since they are on the same path for that pair of hosts -
ANSWERS-False
The Internet topology has been evolving to an increasingly prominent
hierarchical structure - ANSWERS-False
As Autonomous System operates across multiple administrative domains
- ANSWERS-False
For two ASes to form a peering agreement, they need to find common
ground regarding the internal policies and traffic engineering approaches
that each AS implements - ANSWERS-False
,A Content Distribution Network (CDN) or ISP can operate over multiple
Autonomous Systems - ANSWERS-True
*** Review the diagrams quiz questions for quiz 4 - ANSWERS-
Since the BGP path selection process is fixed, an AS has no control over
which routes are selected - ANSWERS-False
An AS can use LocalPref to control which routers are used as exit points
(for the outgoing traffic), and it can use the MED attribute to control
which routers are used as entry points (for the incoming traffic) -
ANSWERS-True
One of the services provided by IXPs is additional security protections
such as mitigation of DDoS (Distributed Denial of Service) attacks -
ANSWERS-True
There are no costs involved for an AS to participate in an IXP -
ANSWERS-False
Since local traffic stays local at IXPs, the IXP infrastructures deal with
limited volumes of traffic - ANSWERS-False
, When a large provider or Content Delivery Network joins an IXP, this
can act as an incentive for other network to join as well - ANSWERS-
True
At an IXP, the members have a choice to peer privately or publicly -
ANSWERS-True
IXPs leading incentive to establish route servers was to charge the
participants for using it - ANSWERS-False
AN IXP route server does not need to run the BGP protocol to facilitate
the establishment of multi-lateral peering sessions - ANSWERS-False
For multi-lateral BGP peering sessions at an IXP, the participants have
the choice to advertise routes, either directly to other participants, or to
the route server - ANSWERS-False
The data plane functions of a traditional router are implemented in
hardware - ANSWERS-True
The control plane functions of a traditional router are implemented in
software - ANSWERS-True
