Expert Network Engineering Interview Training 1 ⋆ IpCisco

Expert Network Engineering Training 1

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Question 1

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	Rendezvous Point
D	Broadcast Router

Question 2

What are the OSPF Packet Types?

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

Question 3

Which Types of Routers are There in an OSPF Network?

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

Question 4

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

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

Question 5

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 network management instead of the protocol snmp.
D	A mechanims used to provide rapid link failure detection instead of routing protocol hellos.

Question 6

Which Ones are some of the Address Types of IPv6?

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

Question 7

What are the Router Types Used in MPLS Networks?

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

Question 8

What are the BGP Packets and Their Main Duty?

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

Question 9

What are the Routing Protocols Used with IPv6?

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

Question 10

Which Ones are True for Route Distinguisher and Route Target?

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

Question 11

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 11 - Used to extend OSPF functionality but no advertised to stub areas.
D	LSA Type 8 - Used for OSPFv2
E	LSA Type 9 - Used for OSPFv3

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	None of them
C	Multicast
D	Anycast

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	peer
B	next-hop-self
C	neighbor
D	network

Question 14

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

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

Question 15

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 Security Router in OSPF Network that provide OSPF Network Redundancy
C	A Central Router in OSPF Network that provide OSPF Routing Exchange between All OSPF Routers
D	A Normal Router in OSPF Network that provide OSPF Routing Facilities

Question 16

Why do We use Route Reflector in BGP network?

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

Question 17

What are the States of OSPF ?

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

Question 18

What are the Label Distribution Protocols?

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

Question 19

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

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