Interview Questions.

Question 1. What Is Cisco Unified Computing System?

Answer :

Cisco Unified Computing System (UCS) unites bodily and virtual computational and network sources right into a single device. UCS is a fixed of pre-integrated facts middle additives that contains blade servers, adapters, fabric interconnects, and extenders which might be integrated beneath a commonplace embedded control machine. This technique consequences in far fewer system components than comparable statistics center structures.

Question 2. Which Operating Systems (os) Are Supported On Ucs?

Answer :

UCS blade servers are certified for following OS:

Microsoft Windows Server 2008
Microsoft Windows Server 2003 R2
Red Hat Enterprise Linux five.3
Red Hat Enterprise Linux 4.Eight
Novell SUSE Linux Enterprise Server 11
VMware vSphere 4
VMware Infrastructure three.5 Update four
Networking Interview Questions
Question three. Which Hypervisors Are Supported On Ucs?

Answer :

Cisco UCS supports numerous hypervisors along with VMware ESX, ESXi, Microsoft Hyper-V, Citrix XenServer and others. Guest operating structures are confined to 255 GB of vRAM and eight digital processors in vSphere four.X, upgraded to one TB of vRAM and 32 vCPUs in vSphere 5.Zero. Additionally, the Cisco UCS Virtual Interface Cards comprise VM-FEX generation that offers digital machines direct get right of entry to to the hardware for improved performance and network visibility.

Question 4. From Where To Download Os Patches And Drivers?

Answer :

You need to download OS patches from the respective companies. Drivers that aren't part of OS and supplied by Cisco may be downloaded from cisco.Com.

Networking Tutorial
Question 5. Does Ucs Support Netflow?

Answer :

No, UCS does no longer help netflow.

CCNA Interview Questions
Question 6. Can I Use A Nexus 5000 As A Ucs 6100 Fabric Interconnect?

Answer :

No, Nexus 5000 is a general reason L2 switch and UCS 6100 series is an crucial part of the unified computing device. The software that runs at the UCS 6100 isn't the same as the Nexus 5000, because the UCS 6100 has each manage and management planes.

Question 7. What Are Ucs Blade Servers And Rack Servers?

Answer :

 UCS Blade Servers sit down within the UCS chassis and are controlled the usage of UCS manager. UCS Rack Servers paintings independently and do now not require the whole UCS infrastructure; however they also can be integrated to your existing UCS infrastructure.

Dynamic Link Library (DLL) Tutorial Switching Interview Questions
Question eight. What Is Ucs Express?

Answer :

UCS express is compact, all-in-one computing and networking machine targeted at department offices. UCS express is build at the idea of lean department office which reduces the branch-workplace infrastructure footprint, device and operating costs, and management complexity. Main components of UCS explicit are ISR Generation2 collection router and Services Ready Engine (SRE) multipurpose x86 blade servers. Cisco ISR G2 features as a blade-server enclosure for SRE blade servers, which in themselves run department workplace applications like DNS, DHCP, and so forth. The machine comes with VMware vSphere Hypervisor for virtualization and CIMC Express for blade server control.

Question 9. What Are Ucs E-series Servers?

Answer :

UCS E-Series Server modules are next-technology, strength-optimized, x86, Intel® Xeon® sixty four-bit blade servers designed to be deployed in Cisco Integrated Services Routers Generation 2 (ISR G2). The Cisco UCS E-Series Servers enlarge the Cisco UCS product portfolio to fulfill the wishes of customers who want to deploy a virtualization-prepared computing infrastructure within the branch-workplace surroundings while retaining a lean branch-office structure. E-series servers are a very good alternative for UCS explicit SRE.

Firewall Support Interview Questions
Question 10. How Are The Ports Mapped From Server To Fabric Interconnect In Ucs?

Answer :

Port mapping from server to material interconnect is automatic in UCS. If the number of links from material extender to cloth interconnect is best one then all the eight ports are pinned to it. If the wide variety of hyperlinks from cloth extender to material interconnect is  then ports 1,3,5,7 are pinned to first link and ports 2,4,6,eight are pinned to second link. If the wide variety of links from fabric extender to material interconnect is four then ports 1,5 are pinned to first link; port 2,6 are pinned to 2nd hyperlink; port 3,7 are pinned to third link; and port four,8 are pinned to fourth link. Remember that 3 link topology isn't supported in UCS.

Question 11. What Is The Maximum Number Of Vlans Supported In Ucs?

Answer :

As of model 1.Three(1), UCS helps as much as 512 VLANs. Remember that VLANs 3968 to 4048 are reserved and can't be used.

Routing Protcol Interview Questions
Question 12. If I Have Forgotten Ucs Password, How To Recover It?

Answer :

If you have forgotten the password, you could set a new password. Connect to the console of UCS 6100 collection cloth interconnect. Reload the fabric interconnect and when it boots up hit ctrl+L or ctrl+shift+R to visit loader activate then boot the kickstart picture; if you have  fabric interconnects related in HA then first reload the subordinate fabric interconnect and bring it in loader activate after which reload the primary and convey it in loader activate, after this load kickstart photograph on primary. Configure the admin password using “admin-password” command by means of going to config terminal mode. Now load the machine picture at the material interconnect or if you have HA load machine picture on the number one cloth interconnect. The password is now set to the new password you have got simply configured; when you have HA then now you may load the kickstart and machine pics on the subordinate cloth interconnect.

Networking Interview Questions
Question 13. What Is The Maximum Number Of User Sessions Supported On Ucs?

Answer :

The maximum number of customers that can be created on UCS is forty eight, this includes any form of consumer. The most range of GUI sessions (getting access to UCS manager via http) supported is 256. The maximum wide variety of CLI sessions (telnet and SSH blended) supported is 32. Remember that CLI and GUI sessions are treated as separate; for this reason you can have at the max 256 GUI periods and 32 CLI sessions at the equal time.

Question 14. If The Fabric Extender Is Connected To Fabric Interconnect Using 4 Links And One Of The Links Fail, What Will Happen?

Answer :

The server interfaces which might be affected will both lose connectivity or fail over to some other material extender, relying if interface is created as a HA interface. UCS M71KR-E/ UCS M71KR-Q Converged community adapter has the functionality to fail over Ethernet interfaces if so configured. UCS 82598KR-CI 10 Gigabit Ethernet Adapter does now not have this functionality. Fibre Channel interfaces that are pinned to failing material extender hyperlink will simply fail and their HA functionality depends in simple terms on host aspect multipathing driver.

If HA/mutipathing is not configured for Ethernet/Fibre Channel then servers related to the failed link will free connectivity but the other three hyperlinks can be operating as standard. Remember that no automatic re-pinning will take place. You can manually re-pin the servers the usage of  link topology, for the reason that 3 link topology isn't supported.

Question 15. What Boot Devices Are Supported?

Answer :

 The supported boot gadgets consist of tough disk drives (HDDs); SAN gadgets; USB gadgets (DVD/CD drives, flash drives, and HDDs); and digital gadgets through the keyboard, video, and mouse (KVM) device (which include DVD drives, USB devices, and ISO files).It is also feasible besides off the SD cards (M1 and M2) or eMMC flash (M3). However, due to the limited examine/write operations of these drives, it isn't advocated to use this media as a boot power.

Cisco Interview Questions
Question 16. Can I Plug In External Cd/dvd And Hard Drives?

Answer :

Yes. You can plug in those drives the use of the USB connector or a dongle.

Question 17. Can I Remove Sd Cards In Both Single-extensive And Double-huge M1and M2 Blades?

Answer :

Yes. The single-huge blades require elimination of the blade to get right of entry to the SD card, while the double-extensive blades have the SD cards available in the the front.

Cisco Nexus switches Interview Questions
Question 18. Why Are There Two Sd Cards On The M1 And M2 Servers?

Answer :

One SD card is used by Cisco IMC as a boot device and is also used for host picture mapping. The 2d SD card may be mapped into the operating machine.

CCNA Interview Questions
Question 19. What Is The Difference Between The E100s And E100d Hard Disks?

Answer :

The E100S drives are used inside the unmarried-wide modules, whereas the E100D drives are used within the double-wide servers. The drives are identical, but they come with one-of-a-kind provider cards that match only within the respective module type.

Question 20. Can I Manually Change A Carrier Card And Therefore Transform An E100s To An E100d Drive?

Answer :

Yes.

Firewall (computing) Interview Questions
Question 21. Are Pcie Cards Hot-swappable?

Answer :

No. PCIe cards aren't warm-swappable.

Question 22. What Raid Modes Are Supported?

Answer :

Hardware RAID 0 and 1 are supported on the unmarried-extensive blades and double-extensive blades with PCIe playing cards, and RAID zero, 1, and five are supported at the double-extensive blades without PCIe cards. A minimal of three drives are required for RAID five aid.

Question 23. Can I Use The Server Without Any Raid Option?

Answer :

Yes, the drives can also perform in “Just a Bunch of Disks” (JBOD) mode.

Router Interview Questions
Question 24. How Do I Access The Internal Network Interfaces?

Answer :

Both inner interfaces can be accessed via the router.

Switching Interview Questions
Question 25. What Are The Methods For Interfacing With The Host?

Answer :

You can interface with the host in numerous ways. You can access the host using the front-panel guide for the monitor and keyboard, serial console redirection via the router console, or the digital KVM.

Question 26. Why Do I Get A “permission Denied” Error After Downloading The .Jnlp Java Launcher For The Vkvm?

Answer :

The downloaded file includes a temporary username and password. The simplest manner to resolve this trouble is to edit the .Jnlp report in a text editor and replace the “Username:” and “Password:” values with the actual credentials.

Enhanced Interior Gateway Routing Protocol (EIGRP) Interview Questions
Question 27. I Can’t Use Network Address Translation (nat) For The Vkvm Connection. Which Ports Do I Need To Use For Nat?

Answer :

 The KVM connection makes use of ports 443 and 2068. Once both are set up for NAT, the KVM have to work.

Firewall Support Interview Questions
Question 28. What Are The Default Username And Password?

Answer :

The default username is “admin.” The default password is “password.”

Question 29. What Is The Difference Between Vdvd And Vhdd?

Answer :

 The vDVD can mount a trendy .ISO record, whereas the vHDD can mount a record machine unload. The vDVD is most commonly used for OS installation, and the vHDD is used for diagnostics.

Dynamic Link Library (DLL) Interview Questions
Question 30. What Clock Rate Is The Memory Running At?

Answer :

All M1 and M2 servers use DDR3-1333 reminiscence, which runs at 667MHz. The M3 modules use DDR4-2133 or DDR-2400, which run at 1066 and 1200 MHz, respectively. Only if each modules at the 160S-M3 module are populated with DDR4-2400 modules can the reminiscence run at 1200 MHz.

Question 31. Why Do M1 And M2 Single-wide Servers Have A Different Memory Type From The M1 And M2 Double-extensive Servers?

Answer :

 Due to the physical length restrictions of the single-wide servers, simplest Very Low Profile (VLP) DIMMs can healthy. The double-huge servers have more area available and may consequently use larger reminiscence modules.

Question 32. Is Fibre Channel Over Ethernet (fcoe) Supported?

Answer :

Yes. FCoE is supported on a double-huge blade with a 10 Gigabit Ethernet PCIe card.

XLink Interview Questions
Question 33. I Am Generally Concerned About The Iops Of The System. What Does Cisco Recommend?

Answer :

 Space is straightforward to estimate, RAID mode is determined with the aid of redundancy necessities, and ultimately performance steering is:

For simple RAID zero deployments and not using a chatty OS, go together with SATA (lowest charge).
For RAID 1 or RAID five deployments with a incredibly chatty OS, go along with SAS (price/performance stability).
For RAID1 or RAID 5 deployments with a chatty OS and apps requiring low latency, go along with SSD (excellent overall performance).
Memory

Routing Protcol Interview Questions
Question 34. Why Is It Not Recommended To Mix Different Memory Module Sizes?

Answer :

Mixing extraordinary sizes of RAM bars makes the CPU cycle uneven, that could motive postpone in the CPU’s statistics fetching that could grow to be a bottleneck. However, this would no longer reason a trouble of compatibility.

Question 35. How Do I Extend Local Storage?

Answer :

You can expand external garage the use of the Network File System (NFS) or Small Computer System Interface over IP (iSCSI). You can use internal or outside Ethernet ports or 10 Gigabit Ethernet FCoE SFP+ (PCIe card).