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Nokia Scalable IP Networks Question and Answers

Nokia Scalable IP Networks

Last Update May 20, 2024
Total Questions : 352

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Questions 1

What is the purpose of the broadcast IP address?

Options:

A.  

To provide an address that refers to all the IP devices in a given subnetwork.

B.  

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

C.  

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

domains.

D.  

To provide an address that refers to a single device on a given subnetwork.

Discussion 0
Questions 2

Which tier of Internet service providers can reach any part of the Internet without having to purchase transit

services from other Internet service providers?

Options:

A.  

A Tier 1 ISP

B.  

A Tier 2 ISP

C.  

A Tier 3 ISP

D.  

Tier 1 and Tier 2 ISPs

Discussion 0
Questions 3

Which of the following IP header fields defines the way packets should be queued?

Options:

A.  

Type of Service

B.  

Identification

C.  

Flags

D.  

Protocol

Discussion 0
Questions 4

How many subnets and host addresses are obtained by subnetting network 201.148.26.0/24 using a /26 subnet mask?

Options:

A.  

4 subnets, 64 hosts per subnet

B.  

8 subnets, 32 hosts per subnet

C.  

4 subnets, 62 hosts per subnet

D.  

8 subnets, 30 hosts per subnet

Discussion 0
Questions 5

Where would you expect to find a P router in a service provider's network?

Options:

A.  

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

B.  

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

C.  

In the core of the provider's network.

D.  

On the customer premises.

Discussion 0
Questions 6

Which of the following best describes a repeater?

Options:

A.  

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

B.  

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

C.  

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.

D.  

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.

Discussion 0
Questions 7

Which of the following information can be seen within the FILE context of the SR 7x50? (Choose two.)

Options:

A.  

File sizes

B.  

Port statistics

C.  

Log-id 100 files

D.  

TiMOS image files

Discussion 0
Questions 8

The TiMOS-m.n.Y.Z software image file is software that:

Options:

A.  

Contains all the components required to configure and run protocols on the Nokia 7750 SR/7450 ESS.

B.  

Loads the router configuration.

C.  

Transfers the router configuration from the router to the network management system.

D.  

Loads the router software image.

Discussion 0
Questions 9

When entering a command on the Nokia 7750 SR from the Command Line Interface (CLI), what would you use to list all the options for the command?

Options:

A.  

?

B.  

tab character

C.  

space character

D.  

info

Discussion 0
Questions 10

Which of the following is a private IP network address reserved by the IANA?

Options:

A.  

172.30.0.0/16

B.  

192.100.0.0/24

C.  

172.0.0.0/16

D.  

169.254.0.0/16

E.  

11.0.0.0/8

Discussion 0
Questions 11

Which organization eventually became the standards body for IP and related protocols?

Options:

A.  

IEEE

B.  

IETF

C.  

NSFNET

D.  

ITU-T

E.  

APNIC

Discussion 0
Questions 12

How many DS-3 frames can be transported in an OC-3 frame?

Options:

A.  

1

B.  

2

C.  

3

D.  

4

Discussion 0
Questions 13

Which of the following is not supported on the Nokia 7450 ESS?

Options:

A.  

Support for IPv6.

B.  

Support for POS.

C.  

Upgrade path to the Nokia 7750 SR.

D.  

Support for IS-IS

Discussion 0
Questions 14

(Click the Exhibit Button below) An Ethernet Local Area Network (LAN) consists of the following components:

Four 24-port hubs & Two 16-port switches

How many broadcast domains are on this LAN?

Options:

A.  

1

B.  

2

C.  

5

D.  

32

Discussion 0
Questions 15

What ICMP message type will a router use to indicate to a host that an IP datagram sourced from that host cannot be delivered?

Options:

A.  

Echo Request.

B.  

Destination Unreachable.

C.  

Router redirect.

D.  

Echo Reply.

Discussion 0
Questions 16

What is NOT a function of the IOM?

Options:

A.  

It forwards the data to the switch fabric.

B.  

It discards excess data packets.

C.  

It converts the incoming data to an internal format.

D.  

It performs Quality of Service operations and buffers incoming data.

Discussion 0
Questions 17

If a 4-port LAG is configured with the option of 'port-threshold 2' and 'action down' what will happen if the total operational links in the LAG is 2?

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 18

What bit pattern identifies the network address in the subnet mask?

Options:

A.  

A string of 1s

B.  

A string of 0s

C.  

A string of alternating 10s

D.  

There is no specific bit pattern to identify the network address.

Discussion 0
Questions 19

Which type of IP address contains the network number and all 1's for the host address?

Options:

A.  

Unicast address.

B.  

Broadcast address.

C.  

Multicast address.

D.  

Anycast address.

Discussion 0
Questions 20

What is the meaning of carrier sense in the CSMA/CD algorithm?

Options:

A.  

The host will retransmit the frame if it detects a collision during transmission.

B.  

The host is able to detect the transmission speed of the Ethernet switch port to which the host is connected.

C.  

The host will only transmit data when it detects that no other devices are transmitting.

D.  

The host will only transmit upon a timer expiry.

E.  

The host will only transmit when it receives the token.

Discussion 0
Questions 21

The IANA is responsible for:

Options:

A.  

Intra-city ISP traffic

B.  

Allocation of the global IP address space

C.  

Allocating IP addresses for residential customer traffic

D.  

Allocating North American IP addresses

Discussion 0
Questions 22

Which of the following IP header fields contains information that indicates whether routers are allowed to fragment a packet?

Options:

A.  

Header checksum.

B.  

Fragmentation offset.

C.  

Flags.

D.  

Identification.

Discussion 0
Questions 23

You are configuring your Nokia 7750SR Service Router from the Command Line Interface (CLI), and after entering a lengthy command, wish to return directly to the ROOT context. Which control command allows you to do this quickly?

Options:

A.  

Ctrl-z

B.  

Ctrl-c

C.  

Esc

D.  

Shift-Page Down

Discussion 0
Questions 24

Click the Exhibit Button below:

An Ethernet Local Area Network (LAN) consists of the components shown in the diagram below:

How many broadcast and collision domains are on this LAN?

Options:

A.  

9 broadcast domains, 3 collision domains.

B.  

3 broadcast domains, 3 collision domains.

C.  

3 broadcast domains, 9 collision domains.

D.  

1 broadcast domain, 9 collision domains.

Discussion 0
Questions 25

Complete the following sentence: The introduction of the subnet address added another:

Options:

A.  

Layer of hierarchy in the addressing structure.

B.  

Class to the classful addressing system.

C.  

16-bit number to accompany the IP address.

D.  

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

Discussion 0
Questions 26

Which of the following does a link-state protocol use when choosing the best path to a destination network?

Options:

A.  

Cost

B.  

Round-trip time

C.  

Hop-count

D.  

Route preference

Discussion 0
Questions 27

Which organization co-ordinates global public IP addresses?

Options:

A.  

IANA

B.  

IETF

C.  

RIR

D.  

IEEE

Discussion 0
Questions 28

Which statement describes the primary purpose of TCP?

Options:

A.  

To establish reliable communication for the application services layer.

B.  

To provide low overhead communication for the application services layer.

C.  

To route IP packets for the application services layer.

D.  

To transmit packets over the physical infrastructure.

Discussion 0
Questions 29

Which of the following statements about the OSPF HELLO message is TRUE?

Options:

A.  

It is used to maintain adjacency between neighbors.

B.  

It is used to request link state updates from neighbors.

C.  

It is used to deliver link state updates to neighbors.

D.  

It is used to confirm delivery of updates between neighbors.

Discussion 0
Questions 30

Which of the MPLS routers is responsible for pushing new labels for LSP A and LSP B?

Options:

A.  

Router R1 pushes labels for both LSP A and LSP B.

B.  

Router R4 pushes labels for both LSP A and LSP

B.  

C.  

Router R1 pushes labels for LSP A, while router R4 pushes labels for LSP B.

D.  

Router R4 pushes labels for LSP A, while router R1 pushes labels for LSP B.

Discussion 0
Questions 31

Router R5 receives four route updates for the same prefix 10.10.10.1/32. Which of the four routes will be installed in R5's routing table?

Options:

A.  

Route learned from router R1.

B.  

Route learned from router R2.

C.  

Route learned from router R3.

D.  

Route learned from router R4.

Discussion 0
Questions 32

Which of the following statements about IP filters on a Nokia 7750 SR is TRUE?

Options:

A.  

Multiple ingress IP filters can be used on a single interface.

B.  

An IP filter can be applied to the management port.

C.  

The same IP filter can be used on multiple interfaces.

D.  

Only one IP filter can be defined per router.

Discussion 0
Questions 33

Which TCP/IP layer is responsible for providing the user’s interface to the network?

Options:

A.  

the application services layer

B.  

The transport layer

C.  

The Internet protocol layer

D.  

The network interface layer

Discussion 0
Questions 34

Which field in the TCP header is used by the receiver to indicate the number of segments it can receive?

Options:

A.  

Checksum

B.  

SYN

C.  

Destination port

D.  

Window size

E.  

MTU

Discussion 0
Questions 35

Which of the following are considered Virtual Private Networks? Choose all that apply.

Options:

A.  

IES

B.  

VPWS

C.  

VPLS

D.  

VPRN

Discussion 0
Questions 36

In regards to the Nokia 7750 SR-12 router, how many of the front access card slots are dedicated for Control Processors?

Options:

A.  

1

B.  

2

C.  

7

D.  

10

Discussion 0
Questions 37

Which transport protocol and port number is used by BGP to establish and maintain a peering session with other BGP speakers?

Options:

A.  

TCP port 179.

B.  

UDP port 179.

C.  

TCP port 22.

D.  

UDP port 22.

Discussion 0
Questions 38

Which of the following applications would be likely to use UDP?

Options:

A.  

Real-time audio application, such as VoIP

B.  

Web browser

C.  

Email application

D.  

Telnet

Discussion 0
Questions 39

How does LDP select the path used for an LSP?

Options:

A.  

LDP monitors the available bandwidth on all links and signals the LSP based on this information.

B.  

LDP uses the shortest hop-count between two endpoints for the LSP.

C.  

LDP must be configured hop-by-hop by the service provider.

D.  

LDP follows the path chosen by the IGP.

Discussion 0
Questions 40

Which statement best describes an SDP?

Options:

A.  

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.

B.  

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.

C.  

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.

D.  

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.

Discussion 0
Questions 41

What is the basic unit of framing in SDH and the bit rate for transmission?

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 42

In the diagram, R7 receives a new LSA from R3 and installs it in its link state database. 10 ms. later it receives another copy of the LSA with the same sequence number from R8. What does R7 do with the LSA received from R8?

Options:

A.  

R7 silently discards the LSA received from R8.

B.  

R7 installs the LSA received from R8 in its link state database and floods a copy to its neighbors.

C.  

R7 discards the LSA received from R8 and sends an ACK to R8.

D.  

R7 installs the LSA received from R8 in its link state database, sends an ACK to R8 and floods a copy to its neighbors.

Discussion 0
Questions 43

Based on the network diagram (click on exhibit), R2 wants to connect to the networks behind CR1 using a static-route. What is the correct syntax given the choices below? R1 has a valid static-route defined for networks behind CR1.

Options:

A.  

config router static-route 192.168.2.0/24 next-hop 10.2.3.2

B.  

config router static-route 192.168.2.0/24 next-hop 10.1.1.1

C.  

config router static-route 192.168.2.0/24 next-hop 10.2.3.1

D.  

config router static-route 192.168.2.0/24 next-hop 10.1.1.2

E.  

none of the above

Discussion 0
Questions 44

What is the purpose of TCP flow control?

Options:

A.  

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

B.  

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

C.  

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

D.  

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

Discussion 0
Questions 45

Which of the following is characteristic of a static route?

Options:

A.  

Responds in real time to network failures.

B.  

Can only be used for routing within an autonomous system.

C.  

Uses a hop-count metric to determine the best route to a network.

D.  

Explicitly defines the next hop based on operator input.

Discussion 0
Questions 46

Which is the public AS in the diagram?

Options:

A.  

65001

B.  

65003

C.  

2002

D.  

All of the above.

E.  

None of the above.

Discussion 0
Questions 47

Which of the following SAP types can be associated to a VPWS? (Choose three.)

Options:

A.  

Ethernet

B.  

ATM

C.  

Token Ring

D.  

Frame Relay

Discussion 0
Questions 48

What is the purpose of the source and destination ports in the TCP header?

Options:

A.  

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

B.  

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

C.  

TCP does not use source or destination ports.

D.  

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

Discussion 0
Questions 49

What are the tasks of a Routing Table Manager (RTM)? (Choose two.)

Options:

A.  

To select the best route from among multiple routing protocols.

B.  

To select the best route using the metric as criteria.

C.  

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

D.  

To install its best route in the routing table.

Discussion 0
Questions 50

A network consists of the components shown in the diagram.

Assuming there are no VLANs, how many

broadcast and collision domains are on this network?

Options:

A.  

9 broadcast domains, 3 collision domains

B.  

3 broadcast domains, 3 collision domains

C.  

3 broadcast domains, 9 collision domains

D.  

1 broadcast domain, 9 collision domains

Discussion 0
Questions 51

Which device is responsible for removing the MPLS label before the packet reaches the customer?

Options:

A.  

The ingress LER

B.  

The CE device

C.  

The P router

D.  

The egress LER

Discussion 0
Questions 52

Which of the following egress interfaces is used to forward a packet with destination IP address 140.10.0.110?

Options:

A.  

System interface

B.  

Interface “toC1”

C.  

Interface “toP1”

D.  

Interface “toP2”

Discussion 0
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