An engineer is designing a security method for a service provider company that needs to secure
BGP peering with external peers. Based on the options provided, which three security precautions
should be taken? (Choose three.)

Refer to the exhibit.

Each AS domain contains more than one BGP router. Site-B sends traffic to ISP-1 over a directly
connected link, but Site-B is not used as an AS transit for the ISP-1 backbone. How should the
routes be advertised by ISP-1 towards Site-B to accomplish this task?

A customer is connected to a service provider by a low-speed link and wants to increase the
bandwidth of this connectivity without creating additional IP addresses. Multiple physical links with

the same bandwidth value are already available between the customer and the service provider.
Which technology can be used to achieve these requirements?

A company has a backup T1 link to its corporate head office. To minimize costs, the company will
use the T1 link only for email downloads from the corporate email server. The PPP dialer initiates
only when the internal server initiates an email connection to the corporate email server. However,
the PPP connection does not disconnect after emails are downloaded. What is the cause of this
issue?

A router is unable to route packets over a PPPoE link. What could be the cause of this issue?

Two routers that use a POS interface are connected back-to-back. The interfaces are operational
with no alarms appearing. When the routers are connected using an SDH network, alarms appear
on the router and the interface status goes down. Which action will fix this issue?

Refer to the exhibit.

The link payload rate is subdivided into multiple fixed-rate channels. In addition, the data rate of a
single cell or packet flow is limited by the bandwidth of an individual channel. If the link is an OC-
48, into how many channels can the link be subdivided?

A company is using a Layer 2 Frame Relay network. Which circuit emulation will a network
engineer use to extend the customer Frame Relay network over the Service Provider backbone?

Refer to the exhibit.

An MPLS VPN service has been provisioned for an ABC customer. Based on the output from the
VRF BGP configuration of PE1 and PE2, which statement describes the route exchange between
ABC site 1 and site 2?

A network engineer observes increasing output drops on the serial interface. Which two solutions
can be implemented to minimize these drops? (Choose two.)