4A0-100 Exam Dumps - Nokia Scalable IP Networks

Intra-city ISP traffic

Allocation of the global IP address space

Allocating IP addresses for residential customer traffic

Allocating North American IP addresses

Label Switching Routers make switching decisions based on the original MAC Header.

Label Switching Routers make routing decisions based on the original IP Header.

Label Switching Routers make forwarding decisions based on the MPLS label.

Label Switching Routers make decisions based on ATM header information.

ATM and Frame-Relay are circuit switched protocols and use Virtual Circuits to create logical separation of traffic.

ATM and Frame-Relay are point-to-point protocols and do not support different customers or traffic type on the same physical wire.

ATM and Frame-Relay are circuit switched protocols and use VLAN's to create logical separation of traffic.

ATM and Frame-Relay are circuit switched protocols and use IP Header information to create logical separation of traffic.

Classful IP addressing provides hierarchy based on variable subnet masks.

Classless IP addresses provide hierarchy based on a variable length subnet mask.

Classless IP addresses provide hierarchy based on fixed subnet masks of /24. /16 and/8.

IP addresses provide hierarchy based on the country code and regional identifier.

IGP

IBGP

EBGP

EGP

BGP cannot be run between routers in different ASs.

100 m.

500 m.

1 Km.

10 Km.

OSPF is a link state protocol with fast convergence.

OSPF supports hierarchy with multiple areas.

The default metric for OSPF is hop count.

OSPF does not support VLSM.

OSPF supports neighbor authentication.

The internet emerged in the commercial world in the 1980’s following the US military’s adoption of TCP/IP in 1983.

The internet evolved from a military to a research to a commercial based network.

The internet remained primarily a research based network and was only commercially adopted in 2000 when the world wide web was conceived.

Internet service providers provided the services necessary for military based networks to evolve into research and education based networks.

An IP datagram is encapsulated within an ICMP header.

ICMP messages can only be generated by routers.

ICMP messages are encapsulated within an IP datagram.

ICMP guarantees delivery of a message.

Type the first letters of the command, then press Ctrl C

Type the first letters of the command, then press Esc

Type the first letters of the command, then press Tab

Type the first letters of the command, then type ?

The IP datagram is encapsulated in the appropriate Layer 2 frame by the MDA.

The IP datagram passes through the switch fabric to reach the egress IOM.

The IP datagram is passed to the IOM.

A lookup is performed in the FIB to determine the egress interface.

Preference

Metric

Dest prefix

Next-hop

Cost

It restricts the sender from sending too much data when there is congestion in the network.

It allows the receiver to control the rate at which the sender transmits data.

It forces the sender to send only one segment at a time.

It allows the receiver to drop segments without the sender having to retransmit.

To select the best route from among multiple routing protocols.

To select the best route using the metric as criteria.

To send its best route to all its directly connected neighbors.

To install its best route in the routing table.

The Service ATM Point is used for ATM connections to a PE.

The Service Access Point is defined on the PE device and is the customers access to the service.

The Service Access Point is defined on the P device and is the customers access to the service.

The Service Access Point is defined on the CE device and is the customers access to the service.

Real-time audio application such as VoIP.

Web browser.

Email application.

Telnet.

Ethernet

ATM

Token Ring

Frame Relay

IES

VPWS

VPLS

VPRN

OSPF

BGP

X.500

IS-IS

Ethernet

Half-duplex transmission is less efficient because the frame MTU is smaller.

An end-station connected to a hub will always be half-duplex.

Ethernet switches only support half-duplex transmission.

All of the above.

Provide a connectionless delivery service.

Provide a connection oriented delivery service.

Provide an unreliable transmission service.

Provide a reliable transmission service.

Maintaining the ordering of data transmitted across the network.

Ensuring the reliable transmission of data across the network.

Providing the receiver with a flow control mechanism.

Defining the method for routing data across the network.

208.40.224.16/28

208.40.224.32/28

208.40.224.48/28

208.40.224.64/28

SF 1

SF 2

SF 3

Both CF1 and CF2

To the customer, it appears as if all sites are directly connected by a single cable.

To the customer, it appears as if all sites are connected through a single switched LAN.

To the customer, it appears as if all sites are connected through a single router.

To the customer, it appears as if all sites are connected through a series of private point-to-point connections.

IP forwarding

IP decapsulation

IP encapsulation

IP tunneling

Router R3 is the iLER for LSP B.

Router R3 is the eLER for LSP A.

Router R is an LSR for both LSP A and LSP B.

Router R3 is LSR for LSP A and an LER for LSP B.

They can be used by routers to interconnect subnets.

They can be used in pairs on the same subnet for redundancy.

They can be logical or physical.

The system interface exists by default.

The allocation of enterprise IP address space

The allocation of residential IP address space

The allocation of global IP address space

The allocation of North American IP address space

It can boot without a compact flash in the CF3 slot.

It cannot boot without a compact flash in the CF3 slot.

It can operate without a compact flash in the CF3 slot once it has booted.

It cannot operate without a compact flash in the CF3 slot once it has booted.

The frame is silently discarded.

The source MAC address is saved in the MAC FDB, and the frame is discarded.

The source MAC address is saved in the MAC FDB, and the frame is flooded to all ports except the

receiving port.

The source and destination MAC addresses are saved in the MAC FDB, and the frame is flooded to all

ports.

IP addresses are assigned by IEEE to vendors.

Classless IP addresses provide hierarchy based on a variable length subnet mask.

Classless IP addresses provide hierarchy based on fixed subnet masks of /24, /16, and /8.

IP addresses provide hierarchy based on the country code and regional identifier.

Destination address

Frame check sequence

Preamble

Length field

IEEE

IETF

NSFNET

ITU-T

APNIC

Application data is transported in 53-byte cells.

ATM circuits are identified by a VPI/VCI value.

Provides enhanced QoS support with 5 classes of service.

Ideal for multiple services on the same physical line.

All of the above.

None of the above

Discover, offer, request, acknowledgement.

Request, offer, discover, acknowledgement.

Discover, request, offer, acknowledgement.

Request, acknowledgement, discover, offer.

Layer of hierarchy in the addressing structure.

Class to the classful addressing system.

16-bit number to accompany the IP address.

4,294,967,296 addresses to the IP address space.

VLAN tag.

IP Header.

FCS.

Priority Value.

Providing path redundancy.

Preventing loops.

Handling collisions.

Allowing flooding of multicast traffic.

It is responsible for encapsulating packets into frames for transmission on physical media

It is responsible for encapsulating packets into IP datagrams and routing them

It is responsible for encapsulating application data into TCP/UDP messages

It is responsible for the timing of the signals on physical media.

By allowing a block of routes to be represented by one route.

By only keeping best routes in the routing table.

By rejecting duplicate route advertisements.

By not advertising directly connected routes.

The same SDP ID can be used on multiple routers.

Each service requires a unique SDP.

SDPs are not configured on P routers.

SDPs are not configured on CE devices.

Provides a connectionless delivery service.

Provides a connection oriented delivery service

Provides an unreliable transmission service,

Provides a reliable transmission service.

It resides on the customer premises.

It is not aware of the VPN services provided by the service provider.

It should connect to at least one other PE router.

It should connect to at least one CE device.

Layer 2 is responsible for encapsulating packets into frames for transmission on physical media.

Layer 2 is responsible for encapsulating packets into IP datagrams and routing them.

Layer 2 is responsible for encapsulating application data into TCP/UDP messages.

Layer 2 is responsible for the timing of the signals on physical media.

VLAN Trunking

VLAN Stacking

VLAN Tagging

VLAN Routing

It is used when forwarding control plane data to the local CPM.

It is used when there is no other known route for a given packet’s destination.

It matches a specific /32 host address with the least cost to the destination.

It is used when forwarding multicast and broadcast packets.

It provides a unique addressing scheme to identify hosts.

It provides a user interface to the network.

It uses routing protocols for path determination.

It provides end-to-end forwarding of datagrams.

Router R2 pushes labels for LSP A, and R3 swaps labels for LSP A.

Router R2 swaps labels for LSP A, and R3 pops labels for LSP A.

Router R2 and R3 swap labels for LSP A and LSP B.

Router R2 and R3 push labels for LSP A and LSP B, respectively.