1. Which of these enables synchronisation between threads in C on Windows?

1. critical_section() { ... }
2. pthread_mutex_lock( &mutex1 ); ... pthread_mutex_unlock( &mutex1 );
3. EnterCriticalSection(&m_CriticalSection); ... LeaveCriticalSection(&m_CriticalSection);
4. synchronized(lock){ ... }

2. Which of these problems might limit an Ethernet networks size?

1. It can only connect two computers
2. Collisions caused by broadcasting messages at the same time
3. Cost
4. Transmission delays

3. Which security goal aims to protect information from disclosure?

1. Integrity
2. Confidentiality
3. Authenticity
4. Accountability

4. Which activity involves an attacker repeatedly requesting information from a web site in order to copy valuable information from its database?

1. Character Encoding
2. Parameter Manipulation
3. Web Scraping
4. Cross Site Scripting

5. What is CSMA/CD?

1. It is a protocol used to cope with message collisions
2. It is a protocol used to prevent and/or minimise transmission delays
3. It is a software package used to backup data onto CD
4. It is a communications protocol used when connecting only two computers

6. Where does the network store the mapping between the MAC and IP addresses?

1. The DNS
2. In the network card
3. ARP table
4. The Hub

7. In which generation of the mobile phone network did SMS appear?

1. First
2. Second
3. Third
4. Fourth