Which two support the tunneling of IP traffic on Junos devices? (Choose two.)
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A. B. C. D.BC
The correct answers are B. GRE and C. IP-IP.
GRE (Generic Routing Encapsulation) and IP-IP are two protocols that support tunneling of IP traffic on Junos devices.
GRE is a protocol that encapsulates packets in order to create a virtual point-to-point link between two network nodes. GRE tunnels can be used to encapsulate any type of protocol, including IP, and are often used to create VPNs (Virtual Private Networks). The encapsulated packets are transported over the existing network infrastructure, and the original source and destination addresses are preserved in the outer header. GRE tunnels can be configured using Junos OS on routers, switches, and security devices.
IP-IP is another protocol that can be used to create tunnels between network nodes. Like GRE, IP-IP encapsulates packets and transports them over an existing network infrastructure. IP-IP tunnels are often used for VPNs, but can also be used for other purposes such as IPv6 transition. IP-IP tunnels can also be configured using Junos OS.
ATM AAL2 and AAL1 are not IP tunneling protocols. They are protocols used for transmitting voice and data over ATM (Asynchronous Transfer Mode) networks. AAL1 is used for real-time applications such as voice and video, while AAL2 is used for non-real-time applications such as data transfer.
In summary, GRE and IP-IP are the two protocols that support the tunneling of IP traffic on Junos devices.