Which of the following describes an IP filter on the Nokia 7750 SR?
A. An IP filter is used to examine an IP packet and its contents.
B. An IP filter is applied to allow or deny IP packets into a network.
C. Multiple ingress and egress filter policies can be applied to a network interface.
D. Once an IP filter is applied it cannot be modified.
Which of the following is a characteristic of Port Address Translation?
A. Resolves a MAC address given a specific IP address.
B. Allows a single public IP address to represent multiple private IP addresses simultaneously.
C. Maps a private address to a well known port number.
D. Provides a one-to-one mapping from a private to a public address.
What is the main purpose of IP fragmentation?
A. To limit the number of the IP addresses in the network.
B. To improve the efficiency of transmissions over the network.
C. To reduce the number of resources required to send a large frame over the network.
D. To allow IP datagrams to be carried over Layer 2 networks with varying MTU sizes.
Which of the following IP header fields contains information that indicates whether routers are allowed to fragment a packet?
A. Header checksum.
B. Fragmentation offset.
C. Flags.
D. Identification.
What happens next after an incoming packet is de-encapsulated from the Layer 2 frame in a Nokia 7750 router?
A. The IP datagram is encapsulated in the appropriate Layer 2 frame by the MDA.
B. The IP datagram passes through the switch fabric to reach the egress IOM.
C. The IP datagram is passed to the IOM.
D. A lookup is performed in the FIB to determine the egress interface.
What is the preference value in the routing table used for?
A. It indicates the preferred egress interface.
B. It differentiates between multiple routes to a destination learned by the same protocol.
C. It differentiates between multiple routes to a destination learned by different routing protocols.
D. It is used to differentiate local routes from remote routes.
At what stage in the packet forwarding process, is the IP packet header examined?
A. When the router first receives a frame from a LAN.
B. After the forwarding table is checked.
C. After the IP datagram is extracted from the L2 frame.
D. Immediately before the IP packet is encapsulated for transmission.
Address summarization reduces the routing table size by:
A. Allowing a contiguous block of network addresses to be represented by one network prefix.
B. Increasing the number of addresses in the routing table.
C. Summarizing addresses in the network into smaller routing tables.
D. Not advertising directly connected routes.
Which of the following is a characteristic of the system address?
A. A physical interface address.
B. A logical address on the router not corresponding to any specific interface.
C. May have any prefix value.
D. A management IP address.
Which of the following is a characteristic of a subnet created with a /31 prefix?
A. There is no broadcast address on the network.
B. The address can only be used as a loopback address.
C. This specifies a single host address.
D. A /31 prefix is not supported on the SR and ESS platform.
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