Sunday, June 26, 2022

Top 100++ F5 Interview Questions

 1 What is iControl?

2 What are iRules in F5 LTM?

3 What is meant by Pool?

4 What is meant by member?

5 What is TMM and its functionality?

6 What is key difference between LTM and GTM?

7 What is a tagged Interface?

8 Which Command line utility displays real-time statistical information forBIG-IP LTM?

9 What is cookie persistence?

10 What is Self IP address?

11 What is floating self IP address?

12 What is HTTP chunking?

13 Which are the latest LTM hardware models in market?

14 What is pipelining?

15 What is Predictive method?

16 What is the default LTM MGMT port IP Address?

17 What is ConfigSync?

18 How is a member different than a node?

19 What is OneConnect and its benefit?

20 What is a load balancing pool?

21 What is meaning of session persistence and why is it required?

22 What is a profile?

23 What is RAM cache?

24 What type items are cached and not cached by RAM feature?

25 What type of lists are considered in URIL Lists?

26 Difference between Node and Pool member?

27 What are Virtual Servers?

28 What are the capabilities of LTM?

29 Which tasks are performed by LTM to offload server of responsibilities?

30 What are the authentication modules that can be implemented on F5Big-IP?

31 What is difference between APM and PAM?

32 What are the load balancing methods used in LTM?

33 Which all Health monitors are available on F5 LTM?

34 What are the deployment modes of F5 LTM?

35 What is SNAT in F5 LTM?

36 How does SNAT work?

37 What is rate shaping?

38 What are 3 key elements of iRule?

39 What is the minimum RAM required to run BIG-IP Virtual Edition on ESXi?

40 What are key elements to be considered while selecting an F5 Load balancer (LTM)?

41 What is a Static Load Balancing mode?

42 What is a Dynamic Load Balancing mode?

43 What is Server Load Balancing?

44 What information needs to be provided to set up an appliance to do cookie load balancing?

45 What is Health Check in refer to load balancer?

46 When load balancing to a real server, which server will be accessed first?

47 What is the difference between a Persistent Cookie Policy and a QoS Cookie Policy in array network loadbalancer?

48 What is Global Server Load Balancing (GSLB)?

49 Does the clustering needs to be turned on to use GSLB?

50 Which Load Balancing methods are supported with Array Network GSLB?

51 What is Reverse Proxy Cache?

52 Define LTM, GTM, APM, ASM.

53 What are the LTM setup steps?

54 How many characters does a base registration key have?

55 What does Set up Utility include?

56 What are pool members?

57 What are the devices represented by IP addresses of pool members?

58 A full proof proxy maintains how many session tables?

59 What is a proxy based design?

60 What is an intelligent SNAT?

61 How to monitor the number of concurrent connections going through the SNAT?

62 How is a member different than a node?

63 What is a load balancing transaction?

64 What is the primary reason for tracking and storing session data?

65 What is the Positive and Negative Security Model?

66 What are HTTP Header Method?

67 Which are the most important web server headers?

68 What do Phase 1 and Phase 2 do?

69 What 4 protocols is the SSL composed of?

70 What is the handshake protocol used for?

71 What is the Change Cipher Spec used for?

72 What is the Alert Protocol used for?

73 What is the Application data Protocol used for?

74 What Hash Algorithms are used in SSL “Client authentication?

75 Which two connection modes do IP Sec have?

76 What is a tunnel mode?

77 What is Recursion Depth?

78 How does cache decide what to cache?

79 What algorithms are used for Cache Content Replacement?

80 What is real clustering?

81 What is virtual clustering and how does it work?

82 What parameters need to be defined in the cluster configuration?

83 What is the purpose of content rewrite?

84 What is the use of extern and static?

85 What is a transport mode?

86 Which metrics can GTM use when making load balancing decisions for a client?

87 Why do we need to use Layer 7 load balancing rather than Layer 3 and Layer 4?

88 What is the difference between hardware load balancer and virtual load balancer?

89 What is the difference between Local Traffic Manager and Global traffic Manager?

90 What information is required to set up my appliance to do Cookie Load Balancing?

91 When load balancing to a Real Server, which server will be accessed first?

92 What is Dynamic Content and Static Content? Can the ArrayAppliance Cache Dynamic Content?

93 What is VLAN? How many bits are there is IPv4 protocol? What is RFC?

94 Difference between router, hub and switch?

95 Compare hash table and Binary balanced trees. List the scenarios when you will prefer hash table.

96 What is SNAT and why is it required?

97 Compare Global Traffic and SNAT.

98 Compare Virtual Servers and SNAT.

99 What is SNAT Automap?

100 What is the SNAT Automap order of difference?

101 Is Inline an alternative to SNAT and how?

102 How to capture the source address with SNAT?

103 Explain the benefits of using unique, custom profiles for virtual services.

104 Explain a service issue where load balancer inspection or configuration alteration led to or implemented a solution.

105 When would one recommend DSR vs full proxy?

106 How can one implement L3 DSR?

107 Do you encrypt traffic between the ADC and the service?

108 Do you prefer Apache with mod_proxy, Nginx, HAProxy or other proxy software? Why?

109 How do you automate service pools with proxies in use?

110 How much TCP manipulation have you performed on the service and why?

111 Explain the implementation, monitoring and adjusting QoS.

112 Why should one use the first-hop redundancy protocols and why? 

113 IGRP would you like to discuss configuration for What?

114 Can one use BGP as an IGRP?

115 What is the difference between checked and unchecked exceptions?


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