Set of flashcards NRS-1

Flashcards	215
Students	11
Language	English
Category	Computer Science
Level	Other
Created / Updated	01.05.2013 / 04.01.2019
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What network type does not require DR/BDR elections for OSPF routers to form an adjacency with one another

Point-to-Point

Broadcast

Non-Broadcast Multi-access

Point-to-Multipoint

Unicast

Point-to-Point

Broadcast

Non-Broadcast Multi-access

Point-to-Multipoint

Unicast

The Alcatel-Lucent 7750 SR s OSPF implementation supports which two packet exchange authentication techniques? (Choose two)

Message Digest 5 (MD5)

Internet Protocol Security (IPSec)

Plain text

Rivest, Shamir, Adleman (RSA)

Message Digest 5 (MD5)

Internet Protocol Security (IPSec)

Plain text

Rivest, Shamir, Adleman (RSA)

In what OSPF area type will one see Type 7 LSAs

Not So Stubby Area (NSSA)

Stub Area

Backbone Area

Normal Area

Not So Stubby Area (NSSA)

Stub Area

Backbone Area

Normal Area

What of the following statements are true? (Choose two)

OSPF Area 0 is a Normal area

Routers in a Normal OSPF area will not have External LSAs in their LSA databases

A router inside a Normal OSPF area may have Router, Network, and External LSAs in its LSA database

Routers in a Normal area cannot propagate External LSAs

OSPF Area 0 is a Normal area

Routers in a Normal OSPF area will not have External LSAs in their LSA databases

A router inside a Normal OSPF area may have Router, Network, and External LSAs in its LSA database

Routers in a Normal area cannot propagate External LSAs

What LSA types will be advertised by an ASBR router for external routes?

LSA Type 1

LSA Type 4

LSA Type 3

LSA Type 5

LSA Type 1

LSA Type 4

LSA Type 3

LSA Type 5

Which OSPF LSA type is used to summarize networks from one area to another?

LSA Type 1

LSA Type 2

LSA Type 3

LSA Type 4

LSA Type 1

LSA Type 2

LSA Type 3

LSA Type 4

What is the range for BGP Private AS numbers?

0-2400

0-64511

64512-65535

65000-65535

0-2400

0-64511

64512-65535

65000-65535

Choose two of the following reasons to implement BGP in your organization? (Choose two)

Your Organization is a transit to clients in different Autonomous systems

Your Organization has a single connection to the Internet

Your Organization has legacy routers and cannot sustain Internet traffic

Your organization needs to monitor and control traffic passing through it

Your Organization is a transit to clients in different Autonomous systems

Your Organization has a single connection to the Internet

Your Organization has legacy routers and cannot sustain Internet traffic

Your organization needs to monitor and control traffic passing through it

How does BGP set-up an internal BGP peering session?

BGP uses I-BGP to discover a route to the internal BGP speaker and then establishes a peering session

BGP requires an IGP to discover a route to the internal BGP speaker and then uses E-BGP to establish a peering session

BGP requires an EGP to discover a route to the internal BGP speaker and then uses I-BGP to establish a peering session

BGP requires an IGP to discover a route to the internal BGP speaker and then is able to establish an I-BGP peering session

BGP uses I-BGP to discover a route to the internal BGP speaker and then establishes a peering session

BGP requires an IGP to discover a route to the internal BGP speaker and then uses E-BGP to establish a peering session

BGP requires an EGP to discover a route to the internal BGP speaker and then uses I-BGP to establish a peering session

BGP requires an IGP to discover a route to the internal BGP speaker and then is able to establish an I-BGP peering session

Which of the following best defines an Autonomous System, as discussed within the context of BGP?Ê

An Autonomous System is a group of OSPF routers under one administrative authority

An Autonomous System is a group of networks connected together through BGP

An Autonomous System is a group of networks and network equipment under one administrative authority

Autonomous Systems are used by a single administrative authority to separate routing domains that utilize different routing protocols

An Autonomous System is a group of OSPF routers under one administrative authority

An Autonomous System is a group of networks connected together through BGP

An Autonomous System is a group of networks and network equipment under one administrative authority

Autonomous Systems are used by a single administrative authority to separate routing domains that utilize different routing protocols

Which of the following best describes a Label Switched Path?

A bi-directional path that uses label switching technology to forward traffic to its destination

A bi-directional path that uses labels to represent the router route-table to forward traffic to its destination

A uni-directional path that uses label switching technology to forward traffic to its destination

A uni-directional path that uses labels to represent the router route-table to forward traffic to its destination

A bi-directional path that uses label switching technology to forward traffic to its destination

A bi-directional path that uses labels to represent the router route-table to forward traffic to its destination

A uni-directional path that uses label switching technology to forward traffic to its destination

A uni-directional path that uses labels to represent the router route-table to forward traffic to its destination

A VLL allows for point-to-multipoint connections

True

False

True

False

You are configuring your Alcatel-Lucent 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?

Ctrl-z

Ctrl-c

Esc

Shift-Page Down

Keyboard commands:

= turn,

= for-/backward,

= scroll

Ctrl-z

Ctrl-c

Esc

Shift-Page Down

How do protocols such as ATM and Frame-Relay support differentiating multiple customers or traffic types on the same physical wire?

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

Keyboard commands:

= turn,

= for-/backward,

= scroll

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

Which of the following is a feature of Layer 3?

Provides an universal addressing scheme

Ensures data is delivered across the Layer 2 network

Provides reliable data transfers

Provides a physical interface to the network

Keyboard commands:

= turn,

= for-/backward,

= scroll

Provides an universal addressing scheme

Ensures data is delivered across the Layer 2 network

Provides reliable data transfers

Provides a physical interface to the network

What kind of information can a Dynamic Host Configuration Protocol (DHCP) client receive?

Details of the configuration settings of each router on the network

A list of other DHCP clients

IP addresses and their lease times

Server time information

Keyboard commands:

= turn,

= for-/backward,

= scroll

Details of the configuration settings of each router on the network

A list of other DHCP clients

IP addresses and their lease times

Server time information

Choose two true statements that characterize Link State Routing

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

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

Keyboard commands:

= turn,

= for-/backward,

= scroll

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

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

Which statement accurately explains the purpose of the TCP protocol and what it provides?

The primary purpose of TCP is to provide reliable communications between application services

The primary purpose of TCP is to provide unreliable communications between application services

The primary purpose of TCP is to provide IP routing between application services

The primary purpose of TCP is to define the correct format for the application layer such as JPEG or HTML

Keyboard commands:

= turn,

= for-/backward,

= scroll

The primary purpose of TCP is to provide reliable communications between application services

The primary purpose of TCP is to provide unreliable communications between application services

The primary purpose of TCP is to provide IP routing between application services

The primary purpose of TCP is to define the correct format for the application layer such as JPEG or HTML

Which of the following is the best description of well known ports?

Well known ports apply to routers only and are used for communication and control traffic. Well known port numbers are assigned by IANA and can have any value

Well known ports are used by TCP and UDP. Well known port numbers range from 1024 to 65535 and are assigned by IANA

Well known port numbers are used by both TCP and UDP. Well known port numbers range from 1 to 1023 and are assigned by IANA

Well known ports numbers are used by TCP only. Well known port numbers are assigned by IANA and can have any value

Keyboard commands:

= turn,

= for-/backward,

= scroll

Well known ports apply to routers only and are used for communication and control traffic. Well known port numbers are assigned by IANA and can have any value

Well known ports are used by TCP and UDP. Well known port numbers range from 1024 to 65535 and are assigned by IANA

Well known port numbers are used by both TCP and UDP. Well known port numbers range from 1 to 1023 and are assigned by IANA

Well known ports numbers are used by TCP only. Well known port numbers are assigned by IANA and can have any value

Which of the following statements best describes ARPANET?

ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa Barbara, UCLA, and U of Utah)

The mission of ARPANET was to connect packet switched networks and other diverse networks, making an international network of networks

ARPANET connected sites spread around the Hawaiian Islands to a central time-sharing computer on the University of Hawaii campus

ARPANET was based on the use of TCP/IP to interconnect diverse systems

ARPANET was an early packet switched network initially connecting 4 sites (Stanford, UC Santa Barbara, UCLA, and U of Utah)

The mission of ARPANET was to connect packet switched networks and other diverse networks, making an international network of networks

ARPANET connected sites spread around the Hawaiian Islands to a central time-sharing computer on the University of Hawaii campus

ARPANET was based on the use of TCP/IP to interconnect diverse systems

Kahn solved the problem of interconnecting different networks using different protocols by pioneering a new protocol called TCP that was capable of:

Secure transmission of information

Enforcing a constant packet size to avoid discards

Allowing remote logins

Providing host to host connectivity with global addressing

Secure transmission of information

Enforcing a constant packet size to avoid discards

Allowing remote logins

Providing host to host connectivity with global addressing

Which network was created to replace ARPANET?

INWG

ALOHANET

IETF

NSFNET

INWG

ALOHANET

IETF

NSFNET

Which statement best describes how the internet evolved?

The internet emerged in the commercial world in the 1980s following the US militarys 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

The internet emerged in the commercial world in the 1980s following the US militarys 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

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

IEEE

IETF

ITU-T

APNIC

IEEE

IETF

ITU-T

APNIC

NRS-1

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