4A0-100 Nokia Scalable IP Networks Questions and Answers

There must be multiple ports assigned to the LAG.

All ports in the LAG must be configured with the same characteristics.

Auto-negotiation must be enabled on all ports in the LAG.

All of the above.

Same host numbers.

Same IP address.

First two bits of the IP address are set to 01.

Same network prefix.

Ethernet II can be used on broadcast networks where as 802.3 was designed for point-to-point networks.

Ethernet II identifies its payload type where as 802.3 indicates the frame length.

Ethernet II identifies its frame length while 802.3 indicates the payload type.

Ethernet II and Ethernet 802.3 are two different names for the same protocol.

100 m.

500 m.

1 Km.

10 Km.

It uses the forwarding table to find a match for the source IP address.

It uses the ARP table to find a match for the source MAC address.

It uses the ARP table to find a match for the destination MAC address.

It uses the forwarding table to find a match for the destination IP address.

Router R1 is an iLER for both LSPs.

Router R1 is an eLER for both LSPs.

Router R1 is an iLER for LSP A and an eLER for LSP B.

Router R1 is an iLER for LSP B and an eLER for LSP A.

10.10.10.0

10.10.10.1

10.10.10.2

10.10.10.3

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 an address that refers to all the devices in a given network.

Provides an address to refer to a specific group of devices in a given network.

Provides an address to refer to a group of devices having the same IP addresses in different Layer 2 networks.

Provides an address to refer to a single device on a given network.

All sites are connected to a single wire.

All sites are connected to a switched network.

All sites are connected to a routed network.

All sites are connected to the Internet.

Type of Service

Identification

Flags

Protocol

Console

Session

Memory

File

A passive device simply used to connect two or more cables. Does not generate or amplify any signals.

A device that receives and retransmits a signal out its other ports, but does not do any Layer 2 analysis of the data.

A device that receives a signal and based on the Layer 2 destination address, makes a decision on which ports the signal should be retransmitted.

A device that receives a signal and based on the Layer 3 destination address, makes a decision on which ports the signal should be retransmitted.

At the edge of the provider's network facing the customer.

At the edge of the customer's network facing the provider.

In the core of the provider's network.

On the customer premises.

Service Delivery Points are defined on the service provider network side and used to bind the service to an MPLS transport tunnel. Many services can be bound to a single SDP.

Service Delivery Points are defined on the service provider access side and used to bind the connection of the service to CE device. Many services can be bound to a single SDP.

Service Delivery Points are defined on the service provider network side and used to bind the service to an MPLS transport tunnel. Only one service can be bound to a single SDP.

Service Delivery Points are defined on the service provider access side and used to bind the service to CE device. Only one service can be bound to a single SDP.

Preference

Metric

Next-hop

Cost

10.2.3.2

10.2.3.1

192.168.2.0

10.1.1.1

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.

Two sites are directly connected by a single cable.

Two sites are connected through a single switched LAN.

Two sites are connected through a public routed network.

Two sites are connected through a private routed network.

Intel Corporation.

Digital Equipment Corporation.

DEC-Intel-Xerox.

Apple Computer.

IBM.

PPP supports multipoint access networks with many stations. The all 1's acts as a broadcast.

PPP supports multipoint access networks with many stations. The all 1's acts as a multicast.

PPP supports point-to-point networks only. The address field is fixed.

PPP supports point-to-point networks only. The address field can change dynamically since every station is assigned a PPP address.

CF 1

CF 2

CF 3

Both A and B

Network Solutions INC

IANA

IETF

ITU-T

IEEE

STM-1 with a bit rate of 1.544 Mbit/s

STM-1 with a bit rate of 2.048 Mbit/s

STM-1 with a bit rate of 51.84 Mbit/s

STM-1 with a bit rate of 155.52 Mbit/s

There is no broadcast address on the network.

The address can only be used as a loopback address.

This specifies a single host address.

A /31 prefix is not supported on the SR and ESS platform.

Interface MTU.

Area ID.

Authentication password.

Hello interval.

Dead interval.

Router priority.

A string of consecutive 1's.

A string of consecutive 0's.

A string of alternating 10's.

The network address is determined by masking the source address with a port's if Index binary representation.

A routing entry, included in the RIB by default, that forwards packets with an unknown destination to the CPM for inspection.

A manual entry used when the destination address of a network is not specifically listed in the routing table.

A manual entry that matches a specific /32 host address using the least cost to the destination.

A default entry in the FIB used when forwarding multicast and broadcast packets.

Real-time audio application such as VoIP.

Web browser.

Email application.

Telnet.

True

False

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

Half-duplex transmission is only 30-40% efficient because of collisions.

Ethernet switches support half-duplex transmission only.

All of the above.

/12

/24

/26

/28

/30

Static Routing

IS-IS

OSPF

iBGP

eBGP

Console

CLI

Memory

File

It reduces the number of routes advertised by the router.

It allows a single route table entry to represent multiple subnetworks

It can reduce the size of the routing table in neighboring routers.

It advertises more specific routes for routing advertisement stability.

Host A and B will generate a jam signal.

Listening hosts will request retransmission.

Host A or B will retry the transmission.

A back-off timer is started by Host A or B.

You cannot have overlapping IP addresses. The service provider must ensure that its customers are all using discrete IP address space.

Each VPRN service maintains a separate VPN routing and forwarding instance to separate customer routing information.

A VPRN will ignore IP addressing information and use MAC addressing instead which are always unique.

A VPRN will translate customer IP addresses to a private addressing scheme administered by the service provider.

Routers periodically send a copy of their routing table to their neighbors.

Routers flood link information throughout the entire area.

Network converges quickly (within several seconds) after a topology change.

Routers do not have precise knowledge of the entire network topology.

IES

VPWS

VPLS

VPRN

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.

Resolves a Mac address given a specific IP address.

Allows a single public IP address to represent multiple private IP addresses simultaneously.

Maps a private address to a well known port number.

Provides a one to one mapping from a private to a public address.

Estimates the round trip-time.

Generates an echo reply.

Calculates the data loss statistics.

Verifies the data field of the message.

0.0.0.0/0 next-hop 10.2 3.2

0.0.0.0/32 next-hop 10.2.3.2

10.2.3.2/32 next-hop 0.0.0.0/0

0.0.0.0/0 next-hop 192.168.2.0

RIPv1.

RIPv2.

OSPF.

BGP.

Static routes.

STS-1 with a bit rate of 1.544 Mbit/s

STS-1 with a bit rate of 2.048 Mbit/s

STS-1 with a bit rate of 51.84 Mbit/s

STS-1 with a bit rate of 155.52 Mbit/s

1

2

7

10

These ports identify the physical location of the sender and the receiver on the IP router.

These ports are used as addresses to communicate with the IP layer.

TCP does not use source or destination ports.

These ports are used as an address to identify the upper layer application using the TCP connection.

next-hop 10.2.3.2

next-hop 192.168.2.1

next-hop 10.2 3.1

next-hop 192.168.2.0

IP forwarding

IP decapsulation

IP encapsulation

IP tunneling