Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

Why is BFD Used?

A	A mechanims used to provide redundancy with routing protocols.
B	A mechanims used to provide quality of service in the network.
C	A mechanims used to provide rapid link failure detection instead of routing protocol hellos.
D	A mechanims used to provide network management instead of the protocol snmp.

Question 2

What are the BGP Packets and Their Main Duty?

A	KEEPALIVE : Handshake in regular intervals.
B	SYN : Provide Synronization of OSPF Network
C	OPEN : Establishes a peering session.
D	UPDATE : Announces new routes or withdrawing previously announced routes.
E	QUALIFY : Differentiates differetn packet types

Question 3

What are the First 6 Steps of BGP Path Selection Algorithm?

A	1)Self-Originated 2)Origin 3)Weight 4)AS Path 5) Local Preference 6)MED
B	1)Weight 2)Local Preference 3)Self-Originated 4)AS Path 5) Origin 6)MED
C	1)Origin 2)Local Preference 3)AS Path 4)Self-Originated 5)Weight 6)MED
D	1)MED 2)Self-Originated 3)Local Preference 4)AS Path 5) Origin 6)Weight

Question 4

Why do We use Route Reflector in BGP network?

A	It is used to provide redundancy in BGP networks.
B	It is used to eliminate the full mesh requirement for building iBGP networks.
C	It is used to provide eBGP neighbourship establishment.
D	It is used to enhance BGP network.

Question 5

Next Hop remains unchanged when route is advertised to IBGP peer; however, it is changed when it is advertised to EBGP peer by default. .... Command provides to change next hop, while advertising, as a local route.

A	network
B	next-hop-self
C	peer
D	neighbor

Question 6

What are the Router Types Used in MPLS Networks?

A	PE (Provider Edge Router)
B	P (Provider Router)
C	SR (Swap Router)
D	PR (Pop Router)

Question 7

What are the Routing Protocols Used with IPv6?

A	MP-BGPv4
B	EIGRP for IPv6
C	RIP for IPv6
D	Integrated ISIS for IPv6
E	OSPFv3
F	OSPFv2

Question 8

What are the Opaque LSAs? Why are they used?

A	LSA Type 11 - Used to extend OSPF functionality but no advertised to stub areas.
B	LSA Type 7 - Used to extend OSPF functionality and MP-BGP
C	LSA Type 10 - Used to extend OSPF functionality and MPLS-TE
D	LSA Type 8 - Used for OSPFv2
E	LSA Type 9 - Used for OSPFv3

Question 9

One route is Coming From a EBGP Peer. Is This Route Shared with IBGP peers?

A	No
B	Yes

Question 10

Which Types of Routers are There in an OSPF Network?

A	ABR (Area Border Router)
B	P Router
C	PE Router
D	Internal Router
E	Backbone Router
F	ASBR (Autonomous System Boundary Router)

Question 11

Which Address Types do we use for MP-BGP? How Many Bits is This Address?

A	VPNv4 32 bits address
B	VPN 128 bits address
C	VPNv4 32 bits address
D	VPN 64 bits address

Question 12

How Many NAT Types are There? What are Their Roles?

A	Static NAT (one-to-one translation of ports or addresses)
B	PAT (NAT overload) (many-to-many translation, traffic with unique port numbers used with single public address)
C	NNAT (many-to-many translation, used with unique port numbers)
D	Normal NAT (one-to-many translation of ports or addresses)
E	Dynamic NAT (many-to-many translation, used with public address pool)

Question 13

What are the Label Distribution Protocols?

A	LDP
B	RSVP-TE
C	IGMP
D	PIM-SM

Question 14

Which Ones are some of the Address Types of IPv6?

A	All of them
B	Unique-Local IPv6 Addresses
C	Global Unicast IPv6 Addresses
D	Link-Local IPv6 Addresses
E	IPv6 Associated Multicast Addresses

Question 15

What are the States of OSPF ?

A	Two-way
B	Syn
C	Extart
D	Exchange
E	Down
F	Loading
G	Init
H	Loading
I	Start

Question 16

An ..... acts as the meeting place for sources and receivers of multicast data in a PIM-SM network. In this network, sources must send their traffic to the RP. This traffic is then forwarded to receivers down a shared distribution tree.

A	Source Router
B	Broadcast Router
C	Rendezvous Point
D	LAN Switch

Question 17

What is DR? And What is it Used For?

A	A Backup Router in OSPF Network that provide connection in case of an emergency
B	A Central Router in OSPF Network that provide OSPF Routing Exchange between All OSPF Routers
C	A Normal Router in OSPF Network that provide OSPF Routing Facilities
D	A Security Router in OSPF Network that provide OSPF Network Redundancy

Question 18

Which Ones are True for Route Distinguisher and Route Target?

A	The route distinguisher makes a unique VPNv4 address across the MPLS network.
B	The route distinguisher makes a unique IP address across the MPLS network.
C	The route target defines which prefixes get imported and exported on the PE routers.
D	The route target defines which prefixes get imported and exported on the P routers.

Question 19

There is no Broadcast in IPv6. In IPv4, broadcast cause to send the packets to all nodes even if they do not care. This cause an unecessary trafffic. In IPv6, instead of broadcast, ...... is used.

A	None of them
B	Anycast
C	Unicast
D	Multicast

Question 20

What are the OSPF Packet Types?

A	LSR (LSU request)
B	LSU (Updates with multiple LSAs)
C	DBD (Summary of LSDB)
D	LSDB (Link State Database)
E	LSAck (Acknowledgement)
F	Hello (Neighbour identification, keepalive)
G	TCN (Topology Change Notification)

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