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

Question 2

Why do We use Route Reflector in BGP network?

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

Question 3

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

Question 4

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 network management instead of the protocol snmp.
C	A mechanims used to provide quality of service in the network.
D	A mechanims used to provide redundancy with routing protocols.

Question 5

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

A	No
B	Yes

Question 6

What are the Router Types Used in MPLS Networks?

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

Question 7

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

Question 8

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 9

What are the OSPF Packet Types?

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

Question 10

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 11

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

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

Question 12

Which Types of Routers are There in an OSPF Network?

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

Question 13

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	LAN Switch
B	Source Router
C	Broadcast Router
D	Rendezvous Point

Question 14

Which Ones are some of the Address Types of IPv6?

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

Question 15

What are the Opaque LSAs? Why are they used?

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

Question 16

What are the Label Distribution Protocols?

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

Question 17

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

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

Question 18

What are the Routing Protocols Used with IPv6?

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

Question 19

What are the BGP Packets and Their Main Duty?

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

Question 20

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	neighbor
B	next-hop-self
C	peer
D	network

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