Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

What are the States of OSPF ?

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

Question 2

Which Ones are True for Route Distinguisher and Route Target?

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

Question 3

What are the Routing Protocols Used with IPv6?

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

Question 4

What are the BGP Packets and Their Main Duty?

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

Question 5

What are the Router Types Used in MPLS Networks?

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

Question 6

Which Ones are some of the Address Types of IPv6?

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

Question 7

Which Types of Routers are There in an OSPF Network?

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

Question 8

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

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

Question 9

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	LAN Switch
C	Rendezvous Point
D	Broadcast Router

Question 10

Why is BFD Used?

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

Question 11

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

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

Question 12

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	Unicast
B	Anycast
C	Multicast
D	None of them

Question 13

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	next-hop-self
B	network
C	peer
D	neighbor

Question 14

What are the Opaque LSAs? Why are they used?

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

Question 15

What are the Label Distribution Protocols?

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

Question 16

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

A	No
B	Yes

Question 17

Why do We use Route Reflector in BGP network?

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

Question 18

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

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

Question 19

What are the OSPF Packet Types?

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

Question 20

What is DR? And What is it Used For?

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

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