Question Paper Name: A Practical Refresher in Computer Science 16th February 2020 Shift 1
Subject Name: A Practical Refresher in Computer Science
Creation Date: 2020-02-16 12:58:20
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Duration: 180
Total Marks: 140
Display Marks: Yes
A Practical Refresher in Computer Science
Group Number: 1
Group Id: 28860724
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Group Maximum Duration: 0
Group Minimum Duration: 120
Show Attended Group?: No
Edit Attended Group?: No
Break time: 0
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Group Marks: 140
Is this Group for Examiner?: No
A Practical Refresher in Computer Science
Section Id: 2886
Section Number: 1
Section type: Online
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Mandatory or Optional: Mandatory
Number of Questions: 70
Number of Questions to be attempted: 70
Section Marks: 140
Sub-Section Number: 1
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Sub-Section Id: 28860727
Question Shuffling Allowed: Yes
Question Number : 1 Question Id : 2886072156 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
At the end of running the Ethernet spanning tree algorithm, which ONE of the following is determined by the participating switches?
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- root bridge ID
- longest path length in the tree
- number of leaves in the tree
- number of hosts connected to each port
Options: 2886078614. 1
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2886078616. 3
2886078617. 4
Question Number : 2 Question Id : 2886072157 Question Type : MCQ Option Shuffling: No
Correct Marks : 2 Wrong Marks : 1
The main purpose of the Ethernet spanning tree algorithm is ________ (Choose the BEST option below).
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- to detect IP address duplicates
- to detect Ethernet address duplicates
- to form a loop-free topology
- to find optimal paths to each destination
Options:
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2886078618. 1
2886078619. 2
2886078620. 3
2886078621. 4
Question Number: 3 Question Id : 2886072158 Question Type : MCQ Option Shuffling: No
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Correct Marks: 2 Wrong Marks : 1
In an Ethernet extended LAN, what do "learning bridges" learn? (Choose one option below).
- the forwarding table
- mapping from ethernet address to IP address
- whether other bridges are active/passive
- whether there are duplicate ethernet addresses
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Options:
2886078622. 1
2886078623. 2
2886078624. 3
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2886078625. 4
Question Number : 4 Question Id : 2886072159 Question Type : MCQ Option Shuffling: No
Correct Marks : 2 Wrong Marks : 1
In an Ethernet extended LAN, when a bridge looks at the source MAC address of a data frame, it ________ (Choose the BEST option below).
- updates its path to the root bridge
- updates its set of active ports
- learns the outgoing port to use for frames destined to that source host
- learns the number of hops in the path from that source host
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Options:
2886078627. 2
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2886078628. 3
2886078629. 4
Question Number : 5 Question Id : 2886072160 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
Which ONE of the following represents the columns of the forwarding table at an Ethernet bridge the best?
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- (destination MAC address, next-hop bridge ID)
- (destination IP address, next-hop IP address)
- (destination MAC address, outgoing port)
- (destination IP address, path to destination)
Options:
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2886078630. 1
2886078631. 2
2886078632. 3
2886078633. 4
Question Number : 6 Question Id : 2886072161 Question Type : MCQ Option Shuffling : No
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Correct Marks : 2 Wrong Marks : 1
Which ONE of the following is the primary purpose of VLANs in Ethernet?
- Connecting to non-Ethernet networks
- Supporting virtual circuits
- Supporting multiple virtual machines per port
- Traffic isolation
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Options:
2886078634. 1
2886078635. 2
2886078636. 3
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2886078637. 4
Question Number : 7 Question Id : 2886072162 Question Type : MCQ Option Shuffling: No
Correct Marks: 2 Wrong Marks : 1
Which ONE of the following is an advantage resulting from circuit switching (compared to packet switching)? Choose the BEST option below.
- Fault tolerance
- High channel utilization
- Guaranteed bandwidth for flows
- No flow setup delay
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Options:
2886078639. 2
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2886078640. 3
2886078641. 4
Question Number: 8 Question Id : 2886072163 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
How are packets forwarded toward the destination in packet switching? Choose the BEST option below.
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- By sending the incoming packet to all outgoing interfaces
- By looking at the packet header
- By sending the incoming packet to firstrankerfirstranker.com
- By looking at the packet contents
Options:
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2886078642. 1
2886078643. 2
2886078644. 3
2886078645. 4
Question Number: 9 Question Id: 2886072164 Question Type: MCQ Option Shuffling: No
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Correct Marks : 2 Wrong Marks : 1
When using circuit switching, what should the link capacity be (in kbps) if you want to support 10 users, each requiring 100kbps. Assume a user is active only 10% of the time.
- 10kbps
- 100kbps
- 1Mbps
- 10Mbps
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Options:
2886078646. 1
2886078647. 2
2886078648. 3
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2886078649. 4
Question Number : 10 Question Id : 2886072165 Question Type : MCQ Option Shuffling: No
Correct Marks: 2 Wrong Marks : 1
Which among the following switching techniques is BEST for bursty user traffic, which technique supports more number of users?
- Packet switching
- Circuit switching
- Virtual circuit switching
- Short circuit switching
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2886078650.1
2886078651.2
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2886078652.3
2886078653.4
Question Number : 11 Question Id : 2886072166 Question Type : MCQ Option Shuffling: No
Correct Marks : 2 Wrong Marks : 1
In the source routing scheme, why is the packet header length variable? Choose the BEST option below.
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- Different destinations are at different hop counts
- Different destinations have different resource requirements
- Different destinations need different amount of data payload
- Different destinations have different processing capabilities
Options:
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2886078654. 1
2886078655. 2
2886078656. 3
2886078657. 4
Question Number: 12 Question Id: 2886072167 Question Type: MCQ Option Shuffling: No
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Correct Marks: 2 Wrong Marks : 1
Which technique has the lowest per packet overhead?
- Circuit switching
- Virtual Circuit Switching
- Datagram switching
- Source routing
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Options:
2886078658.1
2886078659.2
2886078660. 3
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2886078661.4
Question Number : 13 Question Id : 2886072168 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
In the context of Internet routing, a routing domain is called ________ (Choose the BEST option below).
- a routing island
- a routing cloud
- an autonomous system
- a bounded region
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2886078662.1
2886078663.2
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2886078664. 3
2886078665.4
Question Number : 14 Question Id : 2886072169 Question Type : MCQ Option Shuffling: No
Correct Marks: 2 Wrong Marks : 1
Which ONE of the following routing protocols is used by BGP (Border Gateway Protocol)?
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- Pure Distance Vector
- Path Vector
- Dynamic Source Routing
- Link State
Options:
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2886078666.1
2886078667.2
2886078668.3
2886078669.4
Question Number: 15 Question Id: 2886072170 Question Type: MCQ Option Shuffling: No
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Correct Marks: 2 Wrong Marks : 1
Routing using BGP (Border Gateway Protocol) focuses on ________ (Choose the BEST option below).
- policy based routing
- least delay routing
- max throughput routing
- multi-path routing
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Options:
2886078670. 1
2886078671. 2
2886078672. 3
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2886078673. 4
Question Number : 16 Question Id : 2886072171 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
The ________ of an ISP (Internet Service Provider) is: (choose the BEST option below)
- always the same as that used by BGP
- always based on distance vector
- always different from that used by BGP
- independent of what is used by BGP
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Options:
2886078674. 1
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2886078675. 2
2886078676. 3
2886078677. 4
Question Number : 17 Question Id : 2886072172 Question Type : MCQ Option Shuffling: No
Correct Marks: 2 Wrong Marks : 1
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When should an ISP export routes (IP prefix information) it has learnt from its provider ISP to another ISP with which it has a peering relation?
- Always
- Never
- Only when it has exactly one provider
- Only when it has at least two providers
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Options:
2886078678.1
2886078679.2
2886078680. 3
2886078681.4
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Question Number: 18 Question Id : 2886072173 Question Type: MCQ Option Shuffling: No
Correct Marks: 2 Wrong Marks : 1
Which ONE of the following is a relation between ISPs (Internet Service Providers) which DOES NOT usually involve money exchange?
- Provider-customer
- Router-forwarder
- Peering
- Firewall-protectee
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Options:
2886078682.1
2886078683.2
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2886078684. 3
2886078685.4
Question Number : 19 Question Id : 2886072174 Question Type : MCQ Option Shuffling : No
How many peers can an ISP (Internet Service Provider) have? Choose the BEST option below.
- At least one
- At most one
- Any number
- Any even number
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Options:
2886078686.1
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2886078687.2
2886078688.3
2886078689.4
Question Number : 20 Question Id : 2886072175 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
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When should an ISP export IP prefix information it has learnt from its peer ISP to its provider ISP?
- Always
- Never
- Only when it has exactly one provider
- Only when it has at least two providers
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Options:
2886078690. 1
2886078691. 2
2886078692. 3
2886078693. 4
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Question Number : 21 Question Id : 2886072176 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
A router in a particular Internet domain runs both EGP (Exterior Gateway Protocol) and an IGP (Interior Gateway Protocol). Its forwarding table will be based on ________.
- Both EGP and IGP
- Neither EGP nor IGP
- Only EGP
- Only IGP
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Options:
2886078694. 1
2886078695. 2
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2886078696. 3
2886078697. 4
Question Number : 22 Question Id : 2886072177 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
How many root servers are present for DNS (Domain Name System)?
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- Exactly six: one per continent
- About 200: one per country
- Exactly 13: not uniformly distributed across continents
- About 300: not uniformly distributed across countries
Options:
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2886078698. 1
2886078699. 2
2886078700. 3
2886078701. 4
Question Number : 23 Question Id : 2886072178 Question Type : MCQ Option Shuffling : No
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Correct Marks: 2 Wrong Marks : 1
An Internet host can have both a hostname and an IP address as identities. Which ONE of the following is an ADVANTAGE of IP addresses compared to hostnames?
- It is easier for humans to remember IP addresses
- It is easier for routers to route based on IP address
- IP addresses are hierarchical, hostnames are not
- Number of IP addresses possible is much more than number of hostnames
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Options:
2886078702. 1
2886078703. 2
2886078704. 3
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2886078705. 4
Question Number : 24 Question Id : 2886072179 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
Which ONE of the following information must ALWAYS be present at a local DNS server?
- The IP address of www.firstrankerfirstranker.com
- The NS record of www.firstrankerfirstranker.com
- The IP address of the root DNS servers
- The security credentials of at least one search engine
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Options:
2886078706. 1
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2886078707. 2
2886078708. 3
2886078709. 4
Question Number : 25 Question Id : 2886072180 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
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Which ONE of the following is TRUE with respect to a machine on the Internet?
- A machine can have only one IP address but multiple hostnames
- A machine can have only one hostname but multiple IP addresses
- A machine can have only one IP address and only one hostname
- A machine can have multiple IP addresses and also multiple hostnames
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Options:
2886078710. 1
2886078711. 2
2886078712. 3
2886078713. 4
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Question Number : 26 Question Id : 2886072181 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
Which ONE of the following is the DNS record type relevant for sending emails to a particular email address?
- A record
- B record
- EM record
- MX record
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Options:
2886078714. 1
2886078715. 2
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2886078716. 3
2886078717. 4
Question Number : 27 Question Id : 2886072182 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
The original DNS used a centralized hosts.txt file. In what significant way was this architecture changed to pave the way to the current DNS architecture?
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- The text file was replaced with database records
- The text file was replaced with binary format
- A distributed architecture was adopted for better fault tolerance
- Multi-language support was added
Options:
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2886078718. 1
2886078719. 2
2886078720. 3
2886078721. 4
Question Number : 28 Question Id : 2886072183 Question Type : MCQ Option Shuffling : No
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Correct Marks: 2 Wrong Marks : 1
How many top level domains does the DNS name hierarchy have?
- Exactly six: one per each (inhabited) continent
- Exactly 12: one primary + one backup per each (inhabited) continent
- Exactly five: firstranker.com, .org, .edu, .gov, .net
- Several 100s
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Options:
2886078722.1
2886078723.2
2886078724. 3
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2886078725.4
Question Number : 29 Question Id : 2886072184 Question Type : MCQ Option Shuffling: No
Correct Marks : 2 Wrong Marks : 1
In the context of DNS, ICANN (Internet Corporation for Assigned Names and Numbers) is responsible for maintaining ________.
- the web servers of each top level domain
- the root server replicas
- the mail gateways in each domain
- the tier-1 autonomous systems
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Options:
2886078726. 1
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2886078727. 2
2886078728. 3
2886078729. 4
Question Number : 30 Question Id : 2886072185 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
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The current DNS has a ________ implementation and ________ management.
- centralized, centralized
- distributed, distributed
- centralized, distributed
- distributed, centralized
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Options:
2886078730. 1
2886078731. 2
2886078732. 3
2886078733. 4
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Question Number : 31 Question Id : 2886072186 Question Type : MCQ Option Shuffling : No
Correct Marks: 2 Wrong Marks : 1
DNS uses ________ for queries and ________ for replies.
- UDP, UDP
- TCP, TCP
- UDP, TCP
- TCP, UDP
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Options:
2886078734. 1
2886078735. 2
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2886078736. 3
2886078737. 4
Question Number : 32 Question Id : 2886072187 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
Which ONE of the following is true about the transport protocol used by HTTP?
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- It uses only UDP
- It uses only TCP
- It uses UDP and TCP in every download
- It uses TCP for download and UDP for upload
Options:
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2886078738. 1
2886078739. 2
2886078740. 3
2886078741. 4
Question Number : 33 Question Id : 2886072188 Question Type : MCQ Option Shuffling : No
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Correct Marks : 2 Wrong Marks : 1
In the context of HTTP, non-persistent connections refers to the use of:
- unverified server certificate
- UDP for some HTTP downloads
- a separate TCP connection per-HTTP-object
- different browser tabs at the HTTP client
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Options:
2886078742. 1
2886078743. 2
2886078744. 3
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2886078745. 4
Question Number : 34 Question Id : 2886072189 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
________ is absolutely essential for a web proxy to work?
- If-Modified-Since
- If-None-Match
- Host
- User-agent
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Options:
2886078746. 1
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2886078747. 2
2886078748. 3
2886078749. 4
Question Number : 35 Question Id : 2886072190 Question Type : MCQ Option Shuffling : No
Correct Marks : 2 Wrong Marks : 1
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A HTTP object refers to ________ (choose the BEST option below).
- a HTML page or an embedded JPG image
- only HTML pages and not embedded images
- not HTML pages but only embedded images
- only the web server certificate
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Options:
2886078750. 1
28860787
This download link is referred from the post: ARPIT Last 10 Years 2011-2021 Previous Question Papers
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