Hello

Inteview CCNA Question OSPF

111- What is name of OSPF Algo?

Dijecstra or SPF (shortest part first)

112 – What is default size of Hello packets in OSPF?

50 bytes

113- What is default time of hello packets in OSPF?

10 sec

114- How many tables are in OSPF protocol?

Three

1- Neighbor

2- Topology

3- Routing

115- When OSPF protocol advertise its routing table?

When it discover neighbor with the help of hello packets

116- Which table find best path?

Routing table

117- Which updates called incremental updates?

Change based

118- What are partial updates?

Any change in network

119 – After how long OSPF exchange its topology table?

After 30 min

120 – What is refresher?

Every 30 min of topology table exchange time called refresher OR

Exchange time of topology table in OSPF protocol called refresher

122- What s the formula for metric of OSPF?

10^8

CCNA Interview Question Part 1

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CCNA Interview Question Part 8

CCNA Interview Question Part 9

CCNA Interview Question Part 10

CCNA Interview Question Part 11

CCNA Interview Question Part 12

CCNA Interview Question Part 13

CCNA Interview Question Part 14

Short Question of CCNA OSPF

123- On which bas OSPF take decision?

LINK COST

124- What is default cost of serial interface in OSPF?

126- How many types of OSPF Configuration?

There are Two Types

A ) SINGLE AREA

b) MULTI AREA

127- What is hold down time formula of OSPF?

HELLO PACKETS*4=40SECONDS

128 – What is the default bandwidth size of T1 Routers?

1544BYTES

129- If bandwidth will increase what will happen?

SERIAL COST WILL DECREASE

130- What is the command for change serial cost?

IP OSPF COST (which want to set)

131- When DR communicate with BDR which multicast ip it use ?

224.0.0.6

132- What is the draw back of OSPF protocol?

i) Single Area

ii) High Hardware Requirements

iii) Troubleshooting

133- Which protocol comes under Hybrid dynamic type?

EIGRP (ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL)

134- Which protocol works only on Cisco routers?

EIGRP (ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL)

135- What is the size of Hello Packets in EIGREP protocol?

50 BYTES

136- How much hold down time of EIGREP protocol?

15 SECONDS

137- Formula of Hold down time of EIGRP protocol?

HELLO PACKETS*5=15SECONDS

138- After how long EIGRP protocol Advertise its routing table?

5SECONDS

139- Which multicast IP EIGRP protocol use?

224.0.0.10

140- Which protocol called Rapid protocol?

EIGRP

141-What is the name of Algorithm of EIGRP protocol?

DUAL(DIFFUSING UPDATES ALGORITHM)

142- How many hop counts are by default and how much you can increase in EIGRP protocol?

By default 100 counts, and maximum 25

143- How much internal and External AD of EIGRP protocol?

Internal =90 and Externa =170

144- What is the name of best path in EIGRP protocol?

SUCCESSOR

145- What is the second best path name of EIGRP?

FEASIBLE SUCCESSOR