Q1. What happens when a topology of network changes and causes routers to synchronize
their routing tables.
a. broadcast
b. multicast
c. flooding
d. convergence
Ans. d
Q2. what is the advantage of implementing a classless routing protocol?
a. VLSM support
b. discontinous subnets summarization
c. FLSM support
d. summarization of continous subnets
Ans. a,b
Q3. Which is not a classless routing protocol?
a. IGRP
b. IS-IS
c. EIGRP
d. OSPF
Ans. a
Q4. when a route flaps, what does the router do then in a link state environment?
a. generates packets using hello protocol
b. floods area with new routing information
c. reboots
d. none of these
Ans. b
Q5. What is the difference between OSPF and RIP
a. OSPF is fast because of short routing tables
b. OSPF sends routing updates only when necessary
c. OSPF VLSM allows more efficient use of IP addresses
d. both are same and canbe used exchangabelly
Ans. b,c
Q6. OSPF is better than RIPv1 and RIPv2 because
a. greater scalibility and simple route selection
b. greater scalibility and simple configuration
c. simple configuration and simple route selection
d. greater memory requirements
Ans. a
Q7. 'hop count' is used by
a. RIPv1
b. RIPv2
c. OSPF
d. IGRP
Ans. a,b
Q8. Which of the following does not use Bellman-Ford algorithm .
a. IGRP
b. EIGRP
c. RIPv1
d. RIPv2
Ans. b
Q9. Which of the following uses DUAL algorithm
a. IGRP
b. EIGRP
c. RIPv1
d. RIPv2
Ans. b
Q10. consider following authentication :
1. MD5
2. PAP
3. CHAP
4. cleartext
Ones supported by RIPv2 are:
a. 1 and 3
b. 1 and 4
c. 2 and 3
d. 2 and 4
Ans. b
Q11. RIPv2 uses the Class D address __ to multicast its routing updates
a. 224.0.0.1
b. 220.0.0.1
c. 220.0.0.9
d. 224.0.0.9
Ans. d
Q12. How is network layer addresses applied in the OSI model
a. MAC address
b. IP address
c. Network Service Access Point address
d. Packet Layer Protocol address
Ans. c
Q13. Common characteristics of OSPF and IS-IS are :
a. Hello Protocol
b. SPF algorithm
c. Update, decision and flooding
d. link state database
e. all of the above
Ans. e
Q14. IS-IS routers that provide intra area routing services is
a. L1 ES
b. L1 IS
c. L1/L2 IS
d. L1/L2 ES
Ans. c
Q15. An administrator must connect each IS-IS area to
a. Level-1 backbone
b. Level-2 backbone
c. external IS-IS areas
d. Internal IS-IS areas
Ans. b
Q16. The area number assigned to IS-IS backbone is
a. 1
b. 0
c. Any number
d. Not required
Ans. d
Q17. which of the following is Private AS, autonomous system
a. 64513
b. 64500
c. 64130
d. 64511
Ans. a
Q18. How would you populate the BGP table on your router with IGP routes?
a. Redistribute dynamic routes into BGP
b. Redistribute static routes into BGP
c. Using netwrok commaand
d. Redistribute EBGP routes into BGP
Ans. c
Q19. How will you overcome the full mesh requirement with iBGP?
a. aggregate addresses
b. Route reflector
c. BGP groups
d. Confederation
Ans. b,d
Q20. __ can be used to hide internal IP to outsiders
a. subnetting
b. supernetting
c. Encryption
d. Authentication
Ans. b
