4A0-100 Nokia Scalable IP Networks Question and Answers

To find the best path to the destination network and install it in the routing table - based on the metrics of the routing protocol.

To provide a CLI interface that allows the operator to configure the dynamic routing protocol on the router.

To choose the route with the lowest preference and install it in the routing table - based on the routing protocol preference values.

To provide a CLI interface that allows the network operator to install static routes in the routing table.

Layer 3 direct internet access service

Layer 3 IP routed service

Layer 2 point-to-point service

Layer 2 multipoint service

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

Type the first few letters of the command, then press Esc.

Type the first few letters of the command, then press Tab.

Type the first few letters of the command, then type ?.

eBGP peering sessions with routers R1, R3 and R4

iBGP peering sessions with routers R1 and R5

An eBGP peering session with router R1, and iBGP peering sessions with routers R3 and R4

An iBGP peering session with router R1, and an eBGP peering session with router R4

ICMP echo request, ARP request, ARP reply, ICMP echo reply.

ARP request, ARP reply, ICMP echo request, ICMP echo reply.

ICMP echo request, ICMP echo reply, ARP request, ARP reply.

ICMP echo request, ARP reply, ARP request, ICMP echo reply.

RTR-A>config>router>if>ingress# filter ip 1

RTR-B>config>router>if>ingress# filter ip 1

RTR-B>config>router>if>egress# filter ip 1

RTR-A>config>router>if>egress# filter ip 1

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

Small optical module available in a variety of formats.

Contains a CPU for managing the forwarding hardware in each flexible fast path.

Converts traffic from an external standard format to an internal format.

Contains the CPU that runs the routing protocol software as well as the switch fabric.

Support for IPv6.

Support for POS.

Upgrade path to the Nokia 7750 SR.

Support for IS-IS

32-bit network prefix.

24-bit network prefix.

16-bit network.

8-bit network.

Secure transmission of information.

Enforcing a constant packet size to avoid discards.

Allowing remote logins.

Providing host to host connectivity with global addressing.

Specify authorization information to control access to the router.

Define an IP address for the CPM Ethernet port.

Initialize the hardware.

Set the date/time for the system.

If dynamic-cost is enabled it will adjust the cost for routing protocols such as OSPF.

If dynamic-cost is not enabled it will adjust the cost for routing protocols such as OSPF by dividing the link bandwidth by 2.

The LAG will be changed to an operational state of 'down'.

The LAG will function with only 2 ports. There will be no change to the routing metric.

It records the destination MAC address and the interface on which it arrived.

It records the source MAC address and the interface on which it arrived.

It floods the frame out of all its interfaces except the interface on which the frame arrived.

It transmits the frame out of the appropriate interface.

Intra-city ISP traffic

Allocation of the global IP address space

Allocating IP addresses for residential customer traffic

Allocating North American IP addresses

A large corporation.

An ISP.

A home based business.

A content provider.

Provides an unreliable, connectionless data transmission service.

Provides a mechanism for flow control.

Verifies the integrity of all received datagrams.

Provides services equivalent to the OSI data link layer.

All hosts on all networks must have unique host numbers.

IP addresses identify a host and the network on which it resides.

Clients are assigned 32-bit addresses and servers 64-bit addresses.

Router, switch and host addresses are drawn from unique address classes.

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.

Network Solutions INC

IANA

IETF

ITU-T

IEEE

The switch will discard the broadcast frame because there is no specific destination address.

The switch will flood the broadcast frame on all ports on which the switch has seen frames from attached devices

The switch will flood the broadcast frame on ports 2 to 8.

The switch will flood the broadcast frame on all 24 ports.

Providing path redundancy.

Preventing loops.

Handling collisions.

Allowing flooding of multicast traffic.

A VPLS emulates a virtual switch or bridge.

The VPLS performs MAC learning on MAC addresses seen from SAPs and SDPs.

When a VPLS receives a frame with an unknown MAC destination, the frame will be dropped.

MAC addresses are maintained in a MAC address forwarding database (FDB).

Ethernet.

ATM.

Frame Relay.

Token Ring.

R3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1.

R3 installs the LSA received from R1 in its link state database and floods a copy to its neighbors.

R3 discards the LSA received from R1 and sends an ACK to R1.

R3 installs the LSA received from R1 in its link state database, sends an ACK to R1 and floods a copy to its neighbors.

OSPF

BGP

X.500

IS-IS

Ethernet

65001

65003

2002

All of the above.

None of the above.

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.

IGP

IBGP

EBGP

EGP

BGP cannot be run between routers in different ASs.

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.

True

False

A VPLS operates as if 2 sites are directly connected by a single cable.

A VPLS operates as if multiple sites are connected through a single switched LAN.

A VPLS operates as if multiple sites are connected through a single router.

A VPLS operates as if multiple sites are connected through a series of private point-to-point routed connections.

1

2

7

10

A PE router only connects to CE devices.

A PE router only connects to P routers.

A PE router connects to at least one P router.

A PE router connects to at least one CE device.

PE routers support many different interface types connecting to CE devices.

PE routers only support Ethernet interfaces connecting to the CE.

4 subnets, 64 hosts

64 subnets, 4 hosts

4 subnets, 62 hosts

64 subnets, 2 hosts

6 subnets, 30 hosts

Inability to perform switch to switch redundancy using multiple connections at Layer 2.

Missing protocol field in Ethernet II required to identify redundancy protocols at Layer 2.

Missing packet sequencing in Layer 2 Ethernet required to re-order packets on arrival.

Inability to forward multicast frames without a routing protocol.

Host A has received a request to establish a TCP session.

Host A has received a request to close a TCP session

A TCP session is now established to host A.

The TCP session has been terminated due to a timeout.

BGP is an exterior gateway protocol.

BGP routing is based on distance vector.

BGP sends periodic updates to its neighbors.

A router running BGP protocol needs an Autonomous system number

File sizes

Port statistics

Log-id 100 files

TiMOS image files

True

False

Both ARP request and response messages are unicast messages.

Both ARP request and response messages are broadcast messages.

An ARP request is a broadcast message, while an ARP response is a unicast message.

An ARP request is a unicast message, while an ARP response is a broadcast message.

The subnet has only one address reserved for a loopback interface or the system interface.

The subnet has a broadcast address.

The subnet is configured for a point-to point link.

The subnet is reserved for a multicast address groups.

To provide an address that refers to all devices in a network.

To provide an address that refers to a specific group of devices in a network.

To provide an address that refers to a group of devices with the same IP address in different Layer 2 networks.

To provide an address that refers to a single device in a network.

172.16.9.0/24 next-hop 10.10.10.1

172.16.9.0/24 next-hop 10.10.10.2

172.16.9.0.24 next-hop 10.10 10 3

0.0.0.0/32 next-hop 172.16.9.1

VPWS is a simple point-to-point service.

VPWS emulates a Layer 2 connection between two customers.

VPWS does not perform MAC learning.

VPWS encapsulates Layer 2 frames into IP datagrams.

There must be multiple ports assigned to the LAG.

All ports in the LAG must be configured with the same speed and duplex settings.

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

The duplex setting on all the ports must be forced to half.

Auto-negotiation must be set to limited or disabled on at least one member port.

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.

Unique network addressing scheme to identify hosts globally

Orderly access to the transmission medium

Routing protocols for path determination

End-to-end forwarding of datagrams

Checksum

SYN

Destination port

Window size

MTU